President Joe Biden has spoken out for the first time following violence and arrests during demonstrations at multiple US universities, saying: "There is a right to protest but not a right to cause chaos." Tensions at universities across America have been building for days as demonstrators have refused to remove encampments and administrators have called in law enforcement to break them up.

There have been clashes between pro-Palestinian activists and counter-protesters, as well as between demonstrators and police. Speaking at the White House on Thursday, Mr Biden said events at the universities "put to the test two fundamental American principles, the first is the right to free speech and for people to peacefully assemble, the second is the rule of law".

"Both must be upheld.