Rain, rappers and a Marilyn Manson tee: 5 takeaways from Justin Bieber's Sunday show

Goodbye, Boss; hello, Biebs.

Less than 24 hours after Bruce Springsteen ended his much-discussed three-night stand at the Los Angeles Sports Arena (which closed the joint for good late Saturday night), Justin Bieber took the stage at Staples Center on Sunday to kick off an extended engagement no...