I do find issues like this rather disturbing. I am neither condoning or objecting to what anyone has posted up on some web site; I really couldn't less what most of these people have to say.
But, like so much of modern society, prosecuting someone for being rude is nothing more than running a Thought police. It's like issues like racism (and no, I'm not in any way condoning that either), bad-taste jokes about pedophiles (oddly enough, I've heard a couple recently), poking fun at religion and various deities, and any number of other issues. The thing is, the law can not force people to like each other. It keeps trying, but it's never going to succeed. Yes, some of this stuff offends (being "offended" and "outraged" is so "in" these days, don't you find?), but locking someone up because they have been rude is not actually going change anything. It might make them bitter and more hateful, but it's not going to actually do any good. And fining them? What the hell is THAT going to achieve? Ah - money! The modern world's solution to just about everything.
Bottom line is people have always been, and always will carry with them various prejudices, and even hate (along with greed, it's why we have lots of wars), and there is bugger-all constructive you can do about it.