On Tuesday, at least 18 people were injured in the most violent confrontation since the youth-led protest movement emerged in July as Thai police fired water cannons and teargas at protesters marching on parliament.
Demonstrators converged on parliament to put pressure on lawmakers discussing changes to the constitution. Protesters also want the removal of Prime Minister Prayuth Chan-ocha, a former army ruler, and to curb the powers of King Maha Vajiralongkorn.
Police sprayed water cannon at protesters who cut through razor-wire barricades and removed concrete barriers outside parliament. Officers then fired teargas. Thousands of protesters gathered at different points and the number grew into the evening.
Ambulances ferried the injured to hospital. Bangkok’s Erawan Medical Centre said 18 people were hurt, 12 of them suffering as a result of teargas. One of those hurt was a police officer.
“This is brutal,” said a 31-year-old volunteer with the FreeYouth protest group, who gave his name as Oh. Protesters pushed forward behind makeshift shields, including inflatable pool ducks.
The deputy head of Bangkok police, Piya Tavichai, told Reuters: “Police had to use teargas and water cannon because protesters were trying to break through the barriers.”
Government spokesman Anucha Burapachaisri said police had been obliged to act to keep parliamentarians safe.
The Royal Palace has made no comment since the protests began, although the king himself recently described Thailand as a “land of compromise” when asked about the protests.
“This is not a compromise,” said Thanathorn Juangroongruangkit, a former opposition leader who was banned from parliament in a legal decision he says was politically motivated.
Prayuth took power as the head of a military junta in 2014 and remained in office as prime minister after an election last year. Prayuth rejects opposition accusations that the election was unfair.
The last five months have seen the rise of a protest movement demanding deep reform to a system that demonstrators say entrenches the military’s grip on power. Royalist counter-demonstrators say the protests threaten the monarchy.
Lawmakers were discussing several proposals for constitutional changes, some of which would exclude the possibility of altering the monarchy’s role.
There is also discussion of the role of the upper house Senate, which was entirely selected by Prayuth’s former junta and helped ensure that he kept power with a parliamentary majority after last year’s disputed vote.
Some protesters scuffled with dozens of yellow-shirted royalists who had remained behind after an earlier demonstration by hundreds of right-wing Thais calling on lawmakers not to make changes to the constitution.
“Amending the constitution is going to lead to the abolition of the monarchy,” royalist leader Warong Dechgitvigrom told reporters. Protesters have said they do not want to abolish the monarchy.