If wikipedia doesn't have it, and right-wing mainstream media doesn't have your supporting facts, it probably didn't actually happen. While I'm sure there's a deranking of pages that meet certain classifications of "hate speech" on Google/Bing/whatever, I've yet to see any evidence of actual political censorship. While I agree that left-leaning media painted the riots in a more positive light or tried to justify them inappropriately, let's not pretend that they killed more people than they actually did.