BBCThousands of troops were deployed in Thailand as rival political groups held separate protests, one of which turned violent.
Crowds of demonstrators turned out in Bangkok to mark the third anniversary of the coup which ousted controversial Prime Minister Thaksin Shinawatra.
On the Cambodian border an anti-Thaksin group clashed with police as it tried to enter a disputed border temple.
Several people were injured and one man was shot in the neck, an official said.
Security forces and local villagers had set up roadblocks to try to prevent the group entering the 11th century Preah Vihear site, the scene of deadly shootings between Cambodian and Thai troops in recent months.
Basically, riots are happening in Thailand and the Military had to be brought in, and they need to settle their differences or this will continue.