Free Speech is even (especially) for Offensive Speech

You have to stand up for offensive speech because that's always where the attempts to restrict free speech begin. Nobody objects to grandma posting about the church service this weekend at first. They object to the prickly jerk who says things that rightly ruffle feathers. They get agreement to go after him, to shut him down, and then they start to move the window. Eventually, grandma gets busted because her post about the church service is offensive to atheists or Muslims or whoever is willing to claim to be offended by it.

So this ex-cop is probably a jerk, and his speech acts are offensive. That's why we have to stand up for his rights.