TMZ unearthed a 5-year-old video of a 15-year-old Justin telling a racist joke about black people. Here it is:

(From the video) Justin Bieber: Why are black people afraid of chain saws?” (imitating sound of chain saw) Run nigger nigger nigger nigger.

And then after that, he issued an apology:

As a young man, I didn’t understand the power of certain words and how they can hurt. I thought it was OK to repeat hurtful words and jokes, but didn’t realize at the time that it wasn’t funny and that in fact my actions were continuing the ignorance. I take my friendships with people of all cultures very seriously and I apologize for offending or hurting anyone with my childish and inexcusable mistake. I was a kid then and I am a man now who knows my responsibility to the world and to not make that mistake again.

Sure, considering he's done a whole lot of other things to hurt everyone else. Here's the video. NSFW warning: