If so, I suspect you're just commenting without basis, and have no actual inkling what this content is really like.
I work for a large internet company, and have to deal with some of this as a tangential part of my role. Trust me, there is stuff that most normal people would never even want to go near. (No, I'm not talking some angry rants, or some naughty pictures).
I'm all for freedom of speech and all - but I have no qualms about this stuff being flagged as inappropriate and put behind a filter. If you really want to find this stuff, you can - there are communities and chat groups trading in it - you wouldn't have much trouble finding it. But I would posit that most people that want this stuff are actively looking for it, versus wanting to see it on their Facebook or Google+ feed.
Why is discussing whether to heal a person or let them die is fundamentally different from discussing whether to let person settle or ask them to liberate the premises?
Have to admit I am also mildly offended by your racism.