Thai Premier Prayut Chan-O-Cha yesterday urged calm from all sides as tensions rise between royalist groups and pro-democracy protesters calling for reforms to the monarchy. The kingdom has for months seen massive demonstrations led by student leaders calling for democratic reforms, with some bolder figures issuing challenges to Thailand's unassailable monarchy. The movement's demands have sent shockwaves through its royalist establishment, spurring monarchist groups to stage counter-protests which have led to some minor scuffles with protesters.  Prayut -- whose removal from office is one of the movement's key demands – yesterday said both sides are entitled to "express their opinions" -- as long as it is within the law.  "A confrontation is not the way to solve a problem," he said after a cabinet meeting.