BANGKOK – In a rare and closely watched ruling that has sent ripples through Thailand’s deeply polarized political landscape, the Bangkok Criminal Court issued an acquittal Thursday for Thanathorn Juangroongruangkit, the prominent leader of Thailand’s Progressive Movement, clearing him of both royal defamation and computer crime charges stemming from a 2021 social media broadcast.
The charges against Thanathorn originated from comments he made during a Facebook Live stream, where he criticized the administration of then-prime minister Prayuth Chan-ocha for its mismanagement of the national COVID-19 vaccination rollout. A core point of his criticism centered on a government vaccine production contract awarded to a firm owned by King Maha Vajiralongkorn. In its official statement, the court concluded that Thanathorn’s remarks were targeted at the Prayuth government’s policy failures, and carried no malicious or defamatory intent against the Thai monarchy.
Thanathorn has long been one of the most visible critics of Thailand’s conservative political establishment. After co-founding the progressive Future Forward Party in 2018, the movement rose rapidly to claim third place in the 2019 general election, shaking up a political order dominated by military-backed factions for nearly a decade. However, the party was dissolved by the Constitutional Court in 2020 over alleged campaign finance violations, and Thanathorn was removed from parliament that same year over a technical dispute related to media shareholding.
The party’s successor, the Move Forward Party, won a plurality of parliamentary seats in the 2023 general election, marking a historic breakthrough for Thai progressive politics. But conservative lawmakers and establishment actors blocked the party from forming a government, and Move Forward was itself disbanded by court order in 2024 over its proposal to reform the country’s controversial lese majeste law, Article 112 of the Thai criminal code. The movement’s latest iteration, the People’s Party, emerged as the second-largest bloc in the 2026 national election and currently serves as Thailand’s main parliamentary opposition.
Article 112, Thailand’s lese majeste statute, imposes a maximum 15-year prison sentence for anyone convicted of insulting the monarchy. Critics of the law have long argued that it is systematically weaponized to suppress political dissent, a claim backed by data from human rights advocates. Thai Lawyers for Human Rights, an independent legal advocacy organization, records that more than 290 people – the majority of them young student activists – have faced Article 112 charges since pro-democracy protests led by youth activists erupted across the country in 2020. Those 2020 demonstrations centered demands on structural political reform, including changes to the lese majeste law itself. Acquittals in royal defamation cases are extremely uncommon in Thailand, where state institutions remain overwhelmingly aligned with conservative interests that guard the monarchy’s traditional status in national politics. A conviction on the additional charge under the Computer Crime Act would have carried a maximum five-year prison sentence.
Speaking to reporters outside the courtroom immediately after the ruling, Thanathorn expressed relief and used the moment to draw attention to the dozens of political activists still detained on lese majeste charges. “They are not criminals in a literal sense,” he said. “They are in jail because they think and they speak.” He called for the immediate recognition of basic rights for all political prisoners held across the country. The Office of the Attorney General, which brought the case against Thanathorn, confirmed in a post-ruling press statement that it is currently reviewing the decision to consider whether to file an appeal.