4chan (and even more so, 8chan) are the pure essence of no censorship, yet everything from Holocaust denial to rampant racism and sexism thrive and fester and spread. The most persuasive ideas are those that are short, easy to digest, and blame someone who's not you for your misery. The truth, well, it can be messy and complicated, and I'm not sure you can get there without shutting down the puerile voices screaming memes of hatred.