I heard on one of the local radio stations that if Churchill is fired, he will sue - and he has some lawyers willing to defend his First Amendment rights (what a misnomer!) who have reputations as very dirty and very successful lawyers.
The First Amendment guarantees his right to spew whatever B.S. he wants to, it doesn't insure that CU has to give him a pulpit from which to spew it. His "lawyers" are clutching at straws by going after First Amendment.
Anyone who's had his class should sue him and CU for selling a defective product. Communism. It's defective. Communism hasn't stood up to the test of time as a successful socio-economic policy.