Police in Toronto arrested over 600 protesters taking part in demonstrations against the G20 global economic summit. Many of the arrests occurred on Sunday when police raided a University of Toronto building housing protesters. Amnesty International has called for an independent probe into the police crackdown. In a statement, the human rights organization said, “important rights associated with peaceful protest have suffered considerably in the city over the weekend.” The protests were largely peaceful, though several police cars were set on fire and store windows were smashed.