TRENTON, N.J. (AP) — A Princeton University professor has canceled a course on cultural freedoms and hate speech after his use of a racial slur in a teaching exercise led some students to walk out.

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Colleagues say Professor Emeritus Lawrence Rosen has often used the slur during lectures on free speech. They say this is the first time he’s received such a negative response from students.

A small group of students walked out of Rosen’s anthropology class on Feb. 6 after he used the slur three times.

He refused a demand from several students to apologize and argued with at least one student. Two students later filed a complaint.

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The university issued a statement defending Rosen, noting that “values of free speech and inclusivity are central” to the school’s mission and “critical to the education we provide.”

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