Thousands of protesters rallied for a second day in Bangkok to condemn police use of teargas and chemical-laced water cannon jets against them.
Demonstrators gathered outside the national police headquarters, hurling blue and yellow paint and spraying graffiti fiercely critical of the country's king.
More than 50 people were injured during the violent clashes with police earlier in the week sparking calls for changes to the constitution, reform of the monarchy and the removal of the prime minister