Police try to separate pro-democracy protesters and royalists during a clash in Bangkok, Thailand October 21, 2020.

A pro-democracy protester makes a three-finger salute as he attends a march towards the Government House during an anti-government protest as they march in Bangkok, Thailand October 21, 2020.

An injured police officer is taken away as pro-democracy protester march towards the Government House during an anti-government protest in Bangkok, Thailand October 21, 2020.

Pro-democracy protesters make a three-finger salute as they march towards the Government House during an anti-government protest as they march in Bangkok, Thailand October 21, 2020.

Police try to separate pro-democracy protesters and royalists during a clash in Bangkok, Thailand October 21, 2020.

Police try to separate pro-democracy protesters and royalists (wearing yellow) during a clash in Bangkok, Thailand October 21, 2020.

Police officers line up as pro-democracy protesters march towards the Government House during an anti-government protest in Bangkok, Thailand October 21, 2020.

Pro-democracy protesters march towards the Government House during an anti-government protest in Bangkok, Thailand October 21, 2020.

Police try to separate pro-democracy protesters and royalists during a clash in Bangkok, Thailand October 21, 2020.

Police officers line up as pro-democracy protesters march towards the Government House during an anti-government protest as they march in Bangkok, Thailand October 21, 2020.

Pro-democracy protesters march towards the Government House during an anti-government protest as they march in Bangkok, Thailand October 21, 2020.

Police try to separate pro-democracy protesters and royalists during a clash in Bangkok, Thailand October 21, 2020.

Students run during a clash between pro-democracy protesters and royalists in Bangkok, Thailand October 21, 2020.