>> thank you for having me. >> tucker: jason nichols is right in the middle of this debate, an actual professor, teaches african-american studies at the university of maryland peer thank you for coming on. >> thank you for having me. >> tucker: it seems like a baseline for university to have pretty much absolute freedom of speech, a prerequisite for freedom of thought. what is the point of having colleges if you can't say whatever you think? >> i think number one, and society, we don't have complete freedom of speech. >> tucker: true. >> there is libel, there is defamation, there are threats of violence, and inciting violence. those are limits on free speech. i think we have this idea that freedom of speech means you can say anything at any time. >> tucker: no, we know what it is, because of brandon versus ohio in 1967, the famous supreme court case, very specifically outlined the boundaries of free speech. libel is not allowed, of course, imminent threats of violence are not allowed. everything else is allowed. everything else is allowed.