For months now, anger over Israel’s military operation in Gaza has spilled over into mass unrest at universities across the United States. 

This culminated in disturbing scenes last week, when police in riot gear stormed the campus at Columbia University, setting off flashbang grenades and eventually arresting nearly 120 people, many of them hauled away, their hands handcuffed with zip ties. 

This won’t be the last of it, says North American correspondent Farrah Tomazin, who has spoken to protesters from both sides at campuses across the US. 

Today, Tomazin discusses whether these protests ever lead to cultural change, in a country that has a long history of them, some of them deadly. And whether they might help determine the outcome of the American presidential election in November.

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