Opposition protesters have clashed with riot police in chaotic scenes in cities across Venezuela. A Rally in Caracas began peacefully before masked youths hurled rocks and fire bombs as they took part in a march of thousands towards parliament.

A teenager protester has also died, as police used rubber bullets and water cannons. The government has warned demonstrators – who have been protesting for a month – that their right to cause street disruption is not absolute. Justice and Interior Minister Nestor Reverol warned that blocking the highways carried an eight-year sentence.

The demonstrators are especially angry over President Nicolas Maduro’s recent decree that creates a 500-member constituent body to rewrite the constitution, a step that would bypass the opposition-controlled National Assembly.

More than 30 people have been killed and hundreds either injured or arrested since protesters took to the streets in early April.