Examining the Impact of SLAPPs on Income Inequality: An In-depth Case Study from Thailand

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Chomkate Ngamkaiwan
Kwan Phetsawang
Wannaphong Durongkaveroj


In recent decades, Thailand’s impressive economic growth and substantial poverty reduction have been overshadowed by the persistent challenge of income inequality, hindering the nation’s progress. This paper explores the correlation between income inequality and a surge in strategic lawsuits against public participation (SLAPPs) in Thailand. Drawing on diverse data sources, this study identifies sustained income inequality as a driving force behind the rise in SLAPPs, and vice versa, thus disproportionately affecting economically disadvantaged groups and exacerbating socio-economic disparities. To counteract these trends, the paper advocates reinforcing Thailand’s anti-SLAPP legislation, adopting relevant business initiatives, and fostering active stakeholder engagement to promote a supportive ecosystem for activists and poor, low-income SLAPP victims. These measures are crucial for preserving democratic values, addressing the multifaceted challenges of SLAPPs, and creating a more equitable and participatory societal landscape.

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Ngamkaiwan, C., Phetsawang, K. . ., & Durongkaveroj, W. . (2023). Examining the Impact of SLAPPs on Income Inequality: An In-depth Case Study from Thailand. Journal of Human Rights and Peace Studies, 9(2), 122–157. Retrieved from https://so03.tci-thaijo.org/index.php/HRPS/article/view/271950
Academic Articles
Author Biographies

Chomkate Ngamkaiwan, Institute of Human Rights and Peace Studies, Mahidol University

Dr. Chomkate Ngamkaiwan is a lecturer at the Institute of Human Rights and Peace Studies, Mahidol University, Thailand. Her research interests include green criminology, transnational organized crime, environmental rights, and ecological justice. 

Kwan Phetsawang, Ramkhamhaeng University

Assist. Prof. Kwan Phetsawang is an assistant professor at the Faculty of Economics at Ramkhamhaeng University, Thailand. Her research interests include microeconomics, macroeconomics, and economic indicators.

Wannaphong Durongkaveroj, Ramkhamhaeng University

Assist. Prof. Wannaphong Durongkaveroj is an assistant professor at the Faculty of Economics at Ramkhamhaeng University, Thailand. His research interests include development economics, international trade, and macroeconomics.



Alesina, A., & Rodrik, D. (1994). Distributive politics and economic growth. The quarterly journal of economics, 109(2), 465-490. https://doi.org/10.2307/2118470

Alvaredo, F., Chancel, L., Piketty, T., Saez, E., & Zucman, G. (2017). Global inequality dynamics: New findings from WID. world. American Economic Review, 107(5), 404-409. https://doi.org/10.1257/aer.p20171095

ARTICLE 19. (2021). Truth be Told: Criminal defamation in Thai law and the case for reform. https://www.article19.org/wp- content/uploads/2021/03/Thailand_Truth_be_told_decriminalise_defamation-1.pdf

Athukorala, P. C. (2014). Global production sharing and trade patterns in East Asia. In I. N. Kaur, & N. Singh (Eds.), The Oxford handbook of the economics of the Pacific Rim (pp. 333-361). Oxford University Press. https://doi.org/10.1093/oxfordhb/9780199751990.013.014

Baldwin, R. (2019). The Globotics upheaval: Globalization, robotics, and the future of work. Oxford University Press.

Bangkok Post (2022, January 27). Give graft a SLAPP. https://www.bangkokpost.com/opinion/opinion/2254271/give-graft-a-slapp

Borg-Barthet, J., Lobina, E., & Zabrocka, A. (2021). The use of SLAPPs to silence journalists, NGOs and civil society. European Parliament. https://www.europarl.europa.eu/RegData/etudes/STUD/2021/694782/IPOL_STU(2021)694782_EN.pdf

De Juan, A., & Wegner, E. (2017). Social inequality, state-centered grievances, and protest: Evidence from South Africa. Journal of Conflict Resolution, 63(1), 31-58.

Dutta, A. (2020). Judicial harassment against labor rights activists: An analysis. Human Rights and Development Foundation. http://hrdfoundation.org/?p=2397&lang=en

Durongkaveroj, W. (2018). Tolerance for inequality: Hirschman’s tunnel effect revisited. Journal of International Development, 30(7), 1240-1247. https://doi.org/10.1002/jid.3389

Durongkaveroj, W. (2020). Trade, growth, and equity: Four essays [Doctoral Dissertation, Australian National University]. https://openresearch-repository.anu.edu.au/handle/1885/216713

Durongkaveroj, W. (2023). Emphasis on domestic value added in export in the era of global value chain: Evidence from Thailand. Journal of Industrial and Business Economics, 50, 703-729. https://doi.org/10.1007/s40812-022-00239-9

Environmental Law Institute & the Southwest Network for Environmental and Economic Justice. (1997). A guide for community residents and environmental justice activists. https://www.eli.org/sites/default/files/eli-pubs/d15_03.pdf

Forbes, K. J. (2000). A reassessment of the relationship between inequality and growth. American Economic Review, 90(4), 869-887. https://doi.org/10.1257/aer.90.4.869

Fortify Rights. (2018). Thailand: Uphold decision to dismiss criminal-defamation complaint against Thai PBS and journalists. https://www.fortifyrights.org/tha-inv-2018-03-19/

Freedom House. (2023). Freedom in the world 2023: Thailand. https://freedomhouse.org/country/thailand/freedom-world/2023

Global Labor Justice-International Labor Rights Forum (GLJ-ILRF) & International Corporate Accountability Roundtable (ICAR). (2023). Supplying SLAPPs: Corporate accountability for retaliatory lawsuits in Thailand’s poultry supply chain. https://globallaborjustice.org/wp-content/uploads/2023/03/Supplying-SLAPPs_GLJ-ILRF_ICAR_March-2023.pdf

Greenpeace. (2020). Sued into silence: How the rich and powerful use legal tactics to shut critics up. https://www.greenpeace.org/static/planet4-eu-unit-stateless/2020/07/20200722-SLAPPs-Sued-into-Silence.pdf

Hasell, J. (2023). Measuring inequality: What is the Gini coefficient?. OurWorldInData. https://ourworldindata.org/what-is-the-gini-coefficient.

Hewison, K. (2014). Considerations on inequality and politics in Thailand. Democratization, 21(5), 846-866. https://doi.org/10.1080/13510347.2014.882910

Hill, H. (2017). Southeast Asia in the global economy: A selective analytical survey. Philippe Review of Economics, LIV(2), 1-36. https://econ.upd.edu.ph/pre/index.php/pre/article/viewFile/953/852

Hirschman, A. O. (1970). Exit, voice, and loyalty. Responses to decline in firms, organizations, and states. Harvard University Press.

Hirschman, A. O. (1973). The changing tolerance for income inequality in the course of economic development. World Development, 1(2), 29-36. https://doi.org/10.1016/0305-750X(73)90109-5

Human Rights Lawyers Association. (2019). Recommendations on the protection of those who exercise their rights and freedoms from strategic lawsuits against public participation. https://th.boell.org/sites/default/files/2020-04/Final_TRANS-report-SLAPP_A5.pdf

Human Rights Lawyers Association & iLaw (2019). What is SLAPP & why you should care. https://freedom.ilaw.or.th/sites/default/files/AGO%20-%20SLAPP%20Factsheet%20-%20ENG%20-%2011.11.2019.pdf

Inglehart, R., Haerpfer, C., Welzel, C., Kizilova, K., Diez-Medrano, J., Lagos, M., Norris, P., Ponarin, E., & Puranen, B. (2014). World Values Survey 2010-2014, Wave 6. https://catalog.ihsn.org/catalog/8838/related-materials

International Commission of Jurists. (2022). Thailand: Abusive lawsuits targeting journalists (SLAPPs) must be curtailed. https://www.icj.org/thailand-abusive-lawsuits-targeting-journalists-slapps-must-be-curtailed/

Jenmana, T. (2018). Democratisation and the emergence of class conflicts: Income inequality in Thailand, 2001-2016. WID.world Working Paper no. 2018/15. https://wid.world/document/democratisation-and-the-emergence-of-class-conflicts-income-inequality-in-thailand-2001-2016-wid-world-working-paper-2018-15/

Kaewjullakarn, S. & Homket, B. (2023). Laws and measures addressing strategic lawsuits against public participation (SLAPPs) in the context of business and human rights. United Nations Development Programme Thailand. https://www.undp.org/sites/g/files/zskgke326/files/2023-07/eng_slapp_text_30_june_online_final.pdf

Kangkun, P. (2023). Thai companies should not be able to jail their critics. Nikkei Asia. https://asia.nikkei.com/Opinion/Thai-companies-should-not-be-able-to-jail-their-critics

Kurer, T., Hausermann, S., Wuest, B., & Enggist. (2019). Economic grievances and political protest. European Journal of Political Research, 58(3), 866-892. https://doi.org/10.1111/1475-6765.12318

Laovakul, D. (2016). Concentration of land and other wealth in Thailand. In P. Phongpaichit, & C. Baker (Eds.), Unequal Thailand: Aspects of Income, Wealth and Power (pp. 32-42). National University of Singapore Press.

Mańko, R. (2023). Strategic lawsuits against public participation (SLAPPs). BRIEFING EU Legislation in Progress. https://www.europarl.europa.eu/RegData/etudes/BRIE/2022/733668/EPRS_BRI(2022)733668_EN.pdf

Mcgoey, L. (2012). The logic of strategic ignorance. The British Journal of Sociology, 63(3), 553–576. https://doi.org/10.1111/j.1468-4446.2012.01424.x.

Ngamkaiwan, C. (2023). A green criminological framework for PM2.5 pollution prevention in the Bangkok Metropolitan Region. Journal of Population and Social Studies, 31, 534–552. https://so03.tci-thaijo.org/index.php/jpss/article/view/264065

Ngamkaiwan, C. (2023). Secondary green crime: Bangkok’s PM2.5 pollution and policy corruption. International Journal for Crime, Justice and Social Democracy [Advance online publication]. https://doi.org/10.5204/ijcjsd.2857

Norman, C. S. (2010). Anti-SLAPP legislation and environmental protection in the USA: An overview of direct and indirect effects. Review of European Community & International Environmental Law, 19(1), 28-34. https://doi.org/10.1111/j.1467-9388.2010.00659.x

Pring, G. W., & Canan, P. (1996). SLAPPs: Getting sued for speaking out. Temple University Press

Ravallion, M., & Lokshin, M. (2000). Who wants to redistribute?: The tunnel effect in 1990s Russia. Journal of Public Economics, 76(1), 87-104. https://doi.org/10.1016/S0047-2727(99)00064-X

Rawski, F. (2020, March 20). Re: Concerns on the existing legal frameworks that are designated to prevent strategic lawsuits against public participation (SLAPP lawsuits) [Letter from Director, Asia and the Pacific Programme International Commission of Jurists]. https://www.icj.org/wp-content/uploads/2020/03/Thailand-SLAPP-Lawsuits-Letter-2020-ENG.pdf

Rodrik, D. (2012). The globalization paradox: Why global markets, states, and democracy can’t coexist. Oxford University Press.

Schaufele, B. (2022). Chilling effects from Anti-SLAPP laws (MPRA Paper No. 113740). Munich Personal RePEc Archive. https://mpra.ub.uni-muenchen.de/113740/1/MPRA_paper_113740.pdf

Shapiro, P. (2010). SLAPPs: Intent or content? Anti-SLAPP legislation goes international. Review of European Community and International Environmental Law, 19(1), 14 - 27. https://doi.org/10.1111/j.1467-9388.2010.00661.x

Solt, F. (2015). Economic inequality and nonviolent protest. Social Science Quarterly, 96(5), 1314-1327. https://doi.org/10.1111/ssqu.12198

Tassanakunlapan, T. (2019). The problems and prospects on supporting the right to association in cyberspace for expression in the issues of natural resource and environment. King Prajadhipok's Institute. https://shorturl.at/efouK

United Kingdom's Ministry of Justice. (2022). Strategic lawsuits against public participation (SLAPPs): Government response to the call for evidence. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1093987/SLAPPs-call-for-evidence-response.pdf

United Nations Environment Programme. (2023). Environmental rule of law and human rights in Asia Pacific: Strategic litigation against public participation (SLAPPs). https://wedocs.unep.org/bitstream/handle/20.500.11822/43137/litigation_public_participation_SLAPPS.pdf?sequence=3&isAllowed=y

Wang, P., Pan, J., & Luo, Z. (2014). The impact of income inequality on individual happiness: Evidence from China. Social Indicators Research, 121, 413-415. https://www.jstor.org/stable/24721533

Warr, P. G. (2004). Globalization, growth, and poverty reduction in Thailand. ASEAN Economic Bulletin, 21(1), 1-18. https://www.jstor.org/stable/25773799

Warr, P. G., and Nidhiprabha, B. (1996). Thailand’s macroeconomic miracle: Stable adjustment and sustained growth, 1966 to 1996. World Bank and Oxford University Press.

Warr, P. G., and Suphannachart, W. (2020). Benign growth: Structural transformation and inclusive growth in Thailand. WIDER Working Paper No. 2020/46. UNU-WIDER. https://doi.org/10.35188/UNU-WIDER/2020/803-0

Wells, B., & Marzen, C. G. (2016). Getting SLAPPed: A 21st century business risk. Social Science Research Network. http://dx.doi.org/10.2139/ssrn.2626178

White, R. (2009). Environmental victims and resistance to state crime through transnational activism. Social Justice, 36(3(117)), 46–60. https://www.jstor.org/stable/29768548

White, R. (2010). A green criminology perspective. In E. McLaughin & T. Newburn (Eds.), The SAGE handbook of criminological theory (pp. 410–426). SAGE Publications.

Wilkins, K. G., Nadarajah, R., & Shapiro, P. (2010). Breaking the silence: The urgent need for anti-SLAPP legislation in Ontario. EcoJustice. https://www.ecojustice.ca/wp-content/uploads/2014/11/Breaking-the-Silence_the-need-for-anti-SLAPP-legislation.pdf

World Bank. (1993). The East Asian miracle: Economic growth and public policy. Oxford University Press.

World Bank. (2015). World Development Report 2015. https://documents1.worldbank.org/curated/en/645741468339541646/pdf/928630WDR0978100Box385358B00PUBLIC0.pdf

World Bank. (2023). World Development Indicators. https://databank.worldbank.org/source/world-development-indicators

Haerpfer, C., Inglehart, R., Moreno, A., Welzel, C., Kizilova, K., Diez-Medrano J., Lagos, M. Norris, P., Ponarin, E., & Puranen, B.. (2022). World Values Survey: Round Seven - Country-Pooled Datafile Version 5.0. Madrid, Spain & Vienna, Austria: JD Systems Institute & WVSA Secretariat. https://doi.org/10.14281/18241.20

Zorob, M. (2020). Defending defenders: Challenging malicious lawsuits in Southeast Asia. Business & Human Rights Resource Centre. https://media.business-humanrights.org/media/documents/files/documents/2020_CLA_Annual_Briefing_SLAPPs_SEA_FINAL.pdf