Dan Mitchinson: US correspondent on the pro-Palestinian protesters being arrested at Columbia University - Heather du Plessis-Allan Drive

Over in the US, police are still out in full force at New York's Columbia University.

Hundreds of officers have cleared a campus building occupied by students holding a pro-Palestinian protest.

US correspondent, Dan Mitchinson, says police have been asked to stay through the middle of the month.

He says it's sparked activism on dozens of campuses.

"I don't think we've had demonstrations like these probably since the 60's - not since the Vietnam war protests."

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