^Come on. Nobody is suggesting that professors (or NFL players) don’t have the right to speak. It is weird, I know, but some of us will even extend that right to speak to people who are not in agreement with the progressive outrage of the moment. But that is not the issue. The OP asked a legitimate question about how to gauge the level of politics on a particular campus. That is a legitimate question for anyone who is not so myopic that they can’t even admit that virtually all college communities are almost universally more liberal in their outlook than the country as a whole.
i think this illustrates an important point. My daughter is at Vassar, and by any normal definition is pretty liberal. She is on the conservative end of the spectrum at Vassar (or at least so it appears to her so far). But the particular flavor of liberalism at Vassar was palatable to her, while there were other schools (Brown in particular) where the style of liberal/progressive politics on that campus was a big turn off.