Well hell, it seems to come from both sides:

https://www.theguardian.com/us-news/2016/dec/02/professor-watchlist-website-academic

There's no doubt some white male professors are being crucified on the cross of new radical political sensitivities, which cleaves to a racial line in this instance, but the wider battle fought in our universities is that which society in general is facing; namely the battle over whether our society will move towards a more progressive, heterodox, science based future or one which is traditionalist, patriarchal and mono-cultural. Unfortunately, white men seem to have been associated with all things anti-progressive, traditional and paternalistic regardless of their personal motivations. Unfortunately in these fights the symbol, the flag, does not respect the nuance of individualism. Not a good time to be a white male in the politically dominated university environment.