Prelude to violence On 23 February 1991, army chief General
Suchinda Kraprayoon overthrew the government of General
Chatichai Choonhavan. The coup-makers, who called themselves the
National Peace-Keeping Council (NPKC), appointed
Anand Panyarachun as prime minister. Anand's interim government promulgated a new constitution and scheduled parliamentary elections for 22 March 1992. Chamlong decided to resign as governor and become a PDP parliamentary candidate. The PDP won by a landslide in Bangkok, with 32 of 35 seats. Outside Bangkok, however, the PDP won only nine seats. Meanwhile, PDP candidate
Krisda Arunvongse na Ayutthaya became Governor of Bangkok. A government coalition with 55 percent of the lower house was formed without the PDP and appointed Suchinda as prime minister. Massive public protests immediately followed. Chamlong played a major role in the protests and started a hunger strike on 4 May. On 9 May, Suchinda responded by saying that he would support a constitutional amendment making individuals who had not been elected to parliament ineligible for the premiership. Chamlong ended his fast on 9 May as tensions dissipated. That same evening, he also announced his resignation as leader of the PDP to allay suspicions that his actions were politically motivated.
Bloody May The truce was short-lived. On 17 May, the two leading government parties announced that, while they supported the constitutional amendment, they also favored transitional clauses that would permit Suchinda to serve as prime minister for the life of the current parliament. By that evening, 200,000 demonstrators filled
Sanam Luang to call for Suchinda to resign. Chamlong led the protesters on a 2 km march to Government House. As they reached the intersection of
Rachadamnoen and
Rachadamnoen Nok Avenues, they were halted at
Phan Fa Bridge, which had been barricaded with
razor wire by the police. After negotiations failed, some protesters stampeded and broke through the barricade. The police retaliated with water cannons and clubs after protesters tried to commandeer one of the fire trucks. Stones and
Molotov cocktails were soon flying. Chamlong used a loudspeaker to exhort the marchers not to attack the police, but his words were lost in the unrest. Over the next several hours, hundreds of troops arrived to quell the protest. Just after midnight, Suchinda declared a
State of Emergency, making gatherings of more than ten people illegal. Chamlong remained near Phan Fa Bridge and the nearby
Democracy Monument. Around 04:00, soldiers threatened the nearly 40,000 protesters by firing
M16 rifles. An hour and a half later, they began firing again. Using a loudspeaker, Chamlong asked the soldiers to stop shooting. By morning, the army moved more troops in, and crowds grew even larger at other sections of the city. Early on the afternoon of 18 May, Suchinda publicly accused Chamlong of fomenting violence and defended the government's use of force. Shortly after, troops firing continuously in the air, moved in on the crowd surrounding Chamlong. The troops handcuffed and arrested Chamlong. The crowds did not disperse, and the violence escalated. After troops had secured the area around Phan Fa Bridge and the Democracy Monument, protests shifted to
Ramkhamhaeng University across the city. By the evening of 19 May, some fifty thousand people had gathered there.
Royal intervention Early on the morning of 20 May, Princess
Sirindhorn addressed the country on television, calling for a stop to the unrest. Her appeal was rebroadcast throughout the day. In the evening, her brother, Crown Prince
Vajiralongkorn, broadcast a similar public appeal. Then at 21:30, a television broadcast of King
Bhumibol, Suchinda, and Chamlong was shown, in which the king demanded that the two put an end to their confrontation and work together through parliamentary processes. Following the broadcast, Suchinda released Chamlong and announced an amnesty for protesters. He also agreed to support an amendment requiring the prime minister to be elected. Chamlong asked the demonstrators to disperse, which they did. On 24 May 1992, Suchinda resigned. Major General Chamlong later apologized for his role in the events: "I wanted a peaceful rally", he said afterwards. "I can't deny some responsibility for the damage and loss of life. I feel deeply sorry for those families whose members were killed in the incident, for those people who were injured and their families". Nevertheless, he noted that "we were right in what we have done". ==Downfall of the Palang Dharma Party==