Police clear pro-Palestinian protesters from Columbia University

Police have swept through other campuses across the US over the last two weeks, leading to confrontations and more than 1,000 arrests

Hundreds of New York City police swept into Columbia University on Tuesday night to end a pro-Palestinian occupation of an administration building and sweep away a protest encampment (Craig Ruttle/AP)

A pro-Palestinian demonstration that paralysed Columbia University ended in dramatic fashion on Tuesday night, with riot police bursting into a building occupied by demonstrators and making dozens of arrests.

Meanwhile, on the other side of the country, clashes broke out between rival groups at the University of California, Los Angeles (UCLA) early on Wednesday,