They may be supported by commie profs, but that fellow would have invented another source if the commies did not.
Of all my profs, only one was pro-US. Some of the most anti-US profs actually came from the United States to teach here (Ontario).
One openly stated that he was a Marxist. (He's from Kentucky.) I found it inappropriate of him to have done so. 1) He should've kept it to himself 2) I don't like Marxism. I did get an A, but always felt very uncomfortable during his lectures.
It's usually the people who have no clue what it's like living in a communist state that are the most ardent Marxists.