A right-wing blacklist, the "professor watchlist", labels professors as "anti-American" and falsely accuses them of "discrimination against conservative students", because they do things such as teach a feminist approach to things such as Trump's attitude towards women.
The real point of that activity is harassment and intimidation.
This is one of many examples of where right-wingers systematically and falsely accuse others of the sort of wrongs they actually do. Others include Trump's accusations of election rigging on the Democratic side (when actually the Republicans are the ones that do this) are another example.