Protesters hand over letters

Roaring for change: A demonstrator wearing a T-Rex costume carrying a sign during a rally calling for Prayut’s resignation in Bangkok. — Reuters/AP

Pro-democracy protesters in Thailand were confronted by riot police and sprayed by water cannons as they tried to approach Bangkok’s Grand Palace to deliver letters about their political grievances addressed to the country’s king.

The pro-democracy movement has been pushing a bold challenge to reform the country’s monarchy with almost daily demonstrations.