Welcome to the news hour.

Protests took a dramatic turn at Columbia University overnight

when some pro-Palestinian students occupied a building on campus.

Occupations have taken place at other campuses too.

In California today, police arrested 25 protesters

at California State Polytechnic University,

who had taken over a building for about a week

and shut down the campus. A similar occupation was in its fourth. a

similar occupation was in its fourth day at Portland State University

and protesters at the University of North Carolina

took down a US flag and replaced it with a Palestinian one.

For its part, Columbia said it will expel those occupying its facilities.

Early this morning, protesters at Columbia University linked arms and barricaded the

entrance of Hamilton Hall. From the inside activists piled furniture chained

up doors and smashed windows. The same building has been

occupied by demonstrators in decades past, including over the Vietnam War and

later against apartheid in South Africa.

This time though protesters unfurled a banner and dedicated the building to Hind Rajab, a six-year-old who died in Israel's war against Hamas.

Murdered!

Murdered!

In Gaza!

Colombia today locked down the campus

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