Apparently calling out people who stoke racial division by faking hate crimes is considered to be "promoting hate" by Reddit's overlords.
Reddit users who keep tabs on potential hate crime hoaxes via the popular subreddit are met with a label notifying them that "r/hatecrimehoaxes has been banned from Reddit." The page also notes that the page was banned for "violating Reddit's rule against promoting hate."
An archived version of the page from July 2 indicates the subreddit was banned June 30, the same day Reddit blocked "The_Donald" subreddit as the platform began enforcing its recent rules against promoting hate. -Daily Caller
Here's an example from a February archive of the forum, which gained prominence during the Jussie Smollett saga