Malachi Byrd Lawrence Rosen

A Princeton professor is catching heat after students in his classroom walked out because he repeatedly used the word "ni--er" during his lecture.

The incident happened on Tuesday when Professor Lawrence Rosen, who teaches a class titled Cultural Freedoms: Hate Speech, Blasphemy and Pornography, asked students what would be worse, a white man punching a black man or a white man calling a black man "ni--er".

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