Police have used tear gas and water cannons on demonstrators who assembled around the European Union's headquarters in Brussels to protest the adoption of a United Nations migration pact.
About 5,000 people gathered for a protest march on Sunday that local authorities initially banned for fear of violence. Belgium's high court overturned the ban, citing the right to protest peacefully.
Police in Brussels say some protesters became violent when they were asked to disperse.
The Belgian government had to be revamped last week because the biggest coalition party opposed Prime Minister Charles Michel's decision to sign the pact, which is meant to streamline and smooth international mass migration.