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Famed attorney Alan Dershowitz, a longtime professor at Harvard Law School, said on Fox and Friends that colleges have become "places where people are afraid of ideas."

And he said it's gotten to a point where those who express contrary points of view can face "physical intimidation" from students.

“I know when I speak on college campuses in favor of Israel, I need armed guards protecting me from radical leftist students who will use physical intimidation,” he explained.

Dershowitz said that students today come into college thinking they know everything about race, gender and other issues and don't want to hear opposing points of view.

He said that they want to leave college with the same ideas they entered with.

"They want to be kept safe from ideas that they may disagree with," Dershowitz said. "And if they want to be safe from ideas there are better places to be than colleges and university campuses."

Dershowitz said that when he began teaching in the 1950s, it was the right wing trying to censor left wing speech under Sen. Joe McCarthy. But now things are reversed, with the radical left using physical intimidation against speakers who aren't politically correct, such as those who hold pro-Israel or pro-Christian views.

"We have to distinguish between safe spaces for ideas -- there should be none -- and physically safe places, where you're not intimidated or you're not threatened."

Watch the full interview above.

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