Drivers honked horns and motorcyclists raised three-finger salutes as they headed along a 20-kilometre route, demanding the resignation of Prime Minister Prayuth Chan-ocha.
Thailand’s PM says Karen villagers who fled airstrikes returned home of their own will, denying that his country’s security forces had forced them back.
The denial from Prime Minister Prayuth came a day after humanitarian groups said Thailand has been sending back some of the thousands of people who have fled a series of Myanmar military air strikes.
Bangkok police said 99 people were arrested on Sunday in front of the Government House, adding the arrests were necessary under a law forbidding large public gatherings to prevent coronavirus spread.
The rally outside Bangkok's Grand Palace was a continuation of student-led protests that began last year and have rattled Thailand's traditional establishment, which is fiercely opposed to change, especially with regard to the monarchy.
About 1,000 protesters gather near Grand Palace in capital Bangkok demanding end to constitution drafted by military after 2014 coup.
Recent detention of four movement prominent leaders has spurred protesters into action, bringing hundreds to the Democracy Monument intersection in Bangkok's historic quarter – under the close watch of scores of riot police.
Thai health officials have reported 548 new cases, almost all of them among migrant workers in the seafood industry in Samut Sakhon province.
The elections in 76 Thai provinces are the first since Prime Minister Prayut Chan-ocha overthrew an elected government in a military coup.
Thailand’s Constitutional Court ruled in favour of Prayut Chan-ocha regarding a complaint submitted by Pheu Thai party that he broke the law by continuing to live in his military residence after he retired as army commander in September 2014.
Thousands march against lacklustre education system while others protest with giant "asteroid" balls and half a dozen T-Rex characters representing the country's "political dinosaurs".
At least 41 people have been wounded after anti-government demonstrations turned violent, medics say.
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