On content? It has nothing to do with censoring. It is clear as day pointing people to a sub legitimately dedicated to the topic. It is literally the opposite of censoring, it is promoting deeper inquiry.

Look at /r/videos for instance. Last week the Space X landing made historical video content. It was undoubtedly going to the front page, over and over and over (and did). The mods started removing submissions of it because there already was a place to see that: It was already the number one post on that sub, and probably 4/10 of the front page, for a solid day.

At some point, you have to stop just repeating the same thing expecting a new result if you want to present a clear window for people to focus through. That means pointing people in the right direction.

And let's be honest, the Jon Benet case is somewhat of a joke about this sub, outside of the sub. That's how routinely it's brought up. And honestly it does take attention away from other cases which might benefit from a bit of public awareness. It's maybe the most popular unsolved crime in modern memory. It's the new Lindberg baby, but an adorable pageant princess to boot. There is far too much noise in the public about it, and again, the mods pointed to a legitimately better venue for that case in particular.

This is not censorship at all.