Students at Columbia University in New York can opt to finish classes virtually the rest of the semester, in the wake of large demonstrations against Israel's war in Gaza. And protesters at Cal Poly Humboldt clashed with police last night, while 150 students and other protesters were arrested at a confrontation at NYU. Passover seems to have increased the demonstrations, at campuses across the U.S. CBS' Meg Oliver with more reaction.

<p>Students at Columbia University in New York can opt to finish classes virtually the rest of the semester, in the wake of large demonstrations against Israel's war in Gaza. And protesters at Cal Poly Humboldt clashed with police last night, while 150 students and other protesters were arrested at a confrontation at NYU. Passover seems to have increased the demonstrations, at campuses across the U.S. CBS' Meg Oliver with more reaction.</p>

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