Reason.com - a website with a libertarian point of view - provides outstanding coverage of free speech issues. Reason put together nine short videos on different free speech subjects. Since I have a son in college, I enjoyed reading "College and the First Amendment: Free Speech Views." At this link you will find the post and video (just over 4 minutes):
College and the First Amendment: Free Speech Rules (Episode 7)
Please share this with any college students you know. It will certainly be an education for them on their free speech rights on campus. They will quickly learn they have substantial 1st Amendment rights if they attend a public college, although this is not true at private colleges. They will also learn that in the classroom, the professor is still in charge, and he or she can put limits on debate, challenge students and even cut them off.