[1] Initially celebrated as a leading human rights defender, Nampa's involvement in pro-democracy movements has led to numerous criminal charges.

Following Prime Minister Prayuth Chan-o-cha’s directive in November 2020 to enforce all applicable laws, including lèse-majesté, against demonstrators, Nampa's detention was extended to 110 days.

[3] Later, on July 28, 2024, he received an additional four-year sentence for defaming the royal family and violating the Computer Crime Act through two social media posts from early 2021.

[4] Arnon Nampa was born on August 18, 1984, in Thung Khao Luang, a village previously part of Thawat Buri, Roi Et Province, Thailand.

Chamlong Daoruang, an alumnus of Roi Et Wittayalai and member of the Free Thai Movement, significantly influenced Nampa during these formative years.

[7] Initially drawn to poetry, he considered joining the Thai language program at the Faculty of Education, Mahasarakham University in 2003, but ultimately found it unappealing and chose not to enroll.

[5] In 2005, Arnon, alongside other student activists, initially supported the People's Alliance for Democracy during the 2005–2006 Thai political crisis adopting an anti-authoritarian stance against Thaksin Shinawatra.

[10] Following the 2010 crackdown on the ‘Red Shirts’, and the establishment of the Centre for Resolution of Emergency Situation by the army, Arnon represented the กลุ่มวันอาทิตย์สีแดง, 'Red Sunday Group' led by Sombat Bunngam-anong.

He also took on significant lèse-majesté cases involving red-shirt activists, including those of Chotisak Onsoong and Suwicha Thakor, as the political tensions escalated.

The firm also advocated for the welfare and reparations of impoverished families of detained red-shirt protesters and took on significant cases such as those of Ampon Tangnoppakul also known as ‘Uncle SMS’, Thantawut Taweewarodomkul, and Joe Gordon, who was involved in translating the controversial book ‘The King Never Smiles.

[1] Arnon co-founded the Resistant Citizen group in January 2015 after he organized many experimental protests and the 'Coup Down People Rise 2015' party, a symbolic event at the Democracy Monument on December 31, 2014.

The group released multiple YouTube parodies and performance arts about the coup, in which he played the main role in 'Chub Yei Chan-O-Cha' (Kiss to mock the moon, O-Cha).

Arnon, Siravich Sereethiwat, Punsak Srithep, and Wannakiat Chusuwan were arrested and charged by Army Col. Burin Thongprapai with violating the military junta order prohibiting an assembly of more than five people.

[19] Arnon was arrested a second time in 2015 on the train traveling from Bangkok Noi to Rajabhakti Park, led by Siravich of the Democracy Studies Group.

[30] On February 10, 2018, Arnon, Sirivich, and Rangsiman led 200–500 protesters at the Democracy Monument to demand a general election within the year 2018 and to criticize Prayut and Prawit Wongsuwan.

Later in October, he was charged again under the Computer Crime Act for sharing Rajaphakti's plan and "liking" Tongdeang the King's dog parody case in Facebook.

He filed a letter to Prayuth Chan-O-Cha, demanding to explain and investigate the monarchy budget, and urged to distribute a fraction of it to the COVID-19 pandemic crisis.

[38] On June 24, Arnon and the DRG organized a pre-dawn protest at the Democracy Monument across the nation to commemorate the 1932 revolt that ended the absolute monarchy and started the democratic system.

He reminded protesters to support prisoners convicted under the lèse-majesté law, and Tiwagorn Withiton who posted a picture of himself wearing the viral "I lost faith in the monarchy" t-shirt, was then forcibly admitted to a psychiatric hospital.

[43] He stressed that he wanted to reform the constitutional monarchy, not overthrow it, and focused on the asset transfer from the Crown Property Bureau to the personal belongings of the King.

[46] A week later from the historic speech from Arnon, on August 10, 2020, there was a revolutionary rally at Thammasat University, regarding the Rangsit campus in Pathum Thani Province named "ธรรมศาสตร์จะไม่ทน" (lit.

Penguin or Parit Chiwarak wrote the revolutionary 10 monarchy reform manifestos, adapted from Somsak Jeamteerasakul, and let Panusaya Sithijirawattanakul read them out without fear from abduction and murder.

[54] Arnon was immediately re-detained, and the court justified this on the theory that "in order to prevent the offender from causing other harm," Being detained for 5 days, on September 7, the police withdrew the request.

[60] He had been detained at Chiang Mai Central Prison until October 27; he was released on 200,000 baht bail, but Pol Lt Col Chok-amnuay Wongboonrit, Chana Songkhram police, arrested him straight away for sedition and ruining archaeological sites in '19-20 September protest'.

[66] The Clooney Foundation for Justice Initiative called on the Thai government to dismiss these charges against him and others to stop sanctions on free speech and peaceful assembly.

[70] Nevertheless, on February 9, 2021, Arnon and the Ratsadon group Parit, Patipan Luecha, and Somyot were arrested and detained again on charges of lèse-majesté and 10 other offenses, including sedition, over a September 19–20 protest by Pol Lt Col Chok-amnuay Wongboonrit and Chana Songkhram police.

[74] On March 15, Arnon wrote the petition, fear of death threat, to the Criminal Court while he was temporarily released to perform his lawyer duty.

[75] On April 8, Arnon, Jatupat, and Somyot signed a letter expressing their intention to withdraw their lawyer from the trial because he cited a lack of due fairness in the court and was therefore no longer required to defend them.

[77] 110 days after being detained without a court verdict, on June 6, he was given bail of 200,000 baht on conditions that included refraining from defaming the monarchy and inciting non-peaceful events along with Panupong.

[79] On August 3, Arnon Nampa gave a critical speech once again in front of the Bangkok Art and Culture Centre to commemorate 'Harry Potter themed' last year.