A policeman searches a backpack as they arrest protesters after a march against tuition fee hikes Thursday, May 24, 2012 in Montreal. A combined force of Montreal and Quebec provincial police ... more 
A policeman searches a backpack as they arrest protesters after a march against tuition fee hikes Thursday, May 24, 2012 in Montreal. A combined force of Montreal and Quebec provincial police surrounded hundreds of demonstrators near the city's downtown before taking at least 400 of them into custody. (AP Photo/THE CANADIAN PRESS/Ryan Remiorz less 
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Associated Press
Thu, May 24, 2012 7:49 AM EDT