Justin Bieber allegedly struck a paparazzo last weekend in Calabasas. Use of fists? Coincidentally, that fits with Bieber's recent blood-and-boxing theme: hanging with Floyd Mayweather Jr. in the ring, training with Mike Tyson and posing for the "knock-out" edition of Complex music magazine. To top off his week, he also reportedly suffered a concussion during a concert in Paris.
Tony Kelly / Complex Music
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