Facebook doing it of its own volition is one thing, and I'd argue they are within the right to do so. Government pressurizing Facebook to censor stuff is entirely other ballgame, which poses a bigger risk, and nobody seems to be paying attention to. (Most attention is given to the content being censored, not the actors behind the censorship).
I agree that this is an issue. The first amendment should protect private actors here from government influence over their own membership policies, other than certain narrow exceptions like protected classes.
Don't like that they ban too many left-wingers/right-wingers? Feel free to get mad about it, just don't get thinking that this is somehow illegal, or should be.
