MTV Holds Raciest Videos for Last: "Under intense scrutiny following Janet Jackson's breast-baring performance during last week's Super Bowl, MTV has quietly plucked a number of its edgiest music videos out of its daytime rotation."

I don't think that airing videos with adult content in the late hours of the day can be considered "engaging in self-censorship" - refusing to air videos with certain content or dictating the content itself, that is censorship. This is just acting responsibly, especially since they actively court a demographic that grows younger with every passing year.