Anti-government protest leader Anon Nampa reported to Bang Pho police on Monday to acknowledge another lese majeste charge under Section 112 of the Criminal Code, this time in connection the rally in front of parliament, near the Kiak Kai intersection, on Nov 17.
He was accompanied by Pongsit Namuangrak, of the Thai Lawyers for Human Rights Centre.
Mr Anon said he was reporting in response to a summons issued by Bang Pho police, media reports said.
He was not dispirited by the charge. He had already received four summonses on lese majeste charges and expected there were more to come, from every past rally. .
All protest leaders were prepared to enter the legal process, he said.
Mr Anon said more demonstrations would be held next year. They would be intensified, to reflect the people's state of mind, the economy and politics.
Their three demands would remain - the resignation of Prime Minister Prayut Chan-o-cha, rewriting of the constitution and reform of the royal institution.
He said this year's rallies were the overture to a long struggle.