Anti-government protesters continue to demonstrate in Bangkok on day one of a 60 day state of emergency.
Despite the mandate, a group of protesters picked off the letters outside the police headquarters and cut a chain on the gate.
Also Wednesday, a pro-government politician was injured in a drive by shooting in what officials say was a politically motivated incident.
Anti-government protesters are calling for Prime Minister Yingluck Shinawatra to step down and for reforms in the electoral process.
Protesters said they would boycott snap elections set for February 2 in which the Prime Minister is expected to win.
Nine people have died since the violence began in November.