I am not going to sit by and tolerate racist fuckwittery here just because there are less racists on this site than non-racists, nor am I going to tolerate misogynist bullshit because there are more feminists on this site than non-feminist. If you think I am because you go waving "free speech" around you are so very very wrong. This ain't Reddit.
Free speech is a right and is protected. But the ability to say whatever you want does not obligate me to listen to you. It does not obligate me to give you a platform to use to spout off your nonsense from. It does not mean that what you say cannot be dangerous. It does not mean I cannot point out danger when I see it. It doesn't mean I can't point out something for being wrong or stupid. It doesn't even mean your employer can't fire you for something you say. Or that you can't be prosecuted for your words (libel, slander, etc). Just because something has not been heard (before, often, much, in full, whatever) does not mean it is worth being heard.