I agree in general with your philosophy of free speech, however, in this case, claiming that what reddit did is "censorship" is a bit misleading. This is Slashdot so I'm quite suprised you've been moderated so highly and that nobody has pointed it out yet; on the other hand perhaps many 'dotters just aren't aware of exactly what happened.
The /r/fatpeoplehate (FPH) subreddit wasn't closed because the community and admins don't like the crap they spew. That would have been censorship, but that's not why the subreddit was closed. FPH was closed because its subscribers started spreading their hate into other subreddits and harassing other users via private messages. reddit was fine with FPH existing and being content with sharing their hate with each other, and they did for a long time. But recently they broke the rules, so they got their subreddit taken away.
That's not censorship, that's compartmentalisation. FPH was allowed to exist and to be dicks by themselves in their own little corner of reddit. That's the point of subreddits. Again, reddit knew about FPH and was OK with its crap as long as it kept to itself. Only after they tried to spread their bullshit was the subreddit closed.