Paris Hilton's boyfriend River Viiperi shoved a overzealous female fan in Cannes -- and we have information that may proves why he was justified in putting his hands on her. Plus, Chief Keef's pot arrest is a load of bull depending on who you ask -- but we talk to the hotel security guard who called the cops on the rapper ... and he explains why he had to make the call. And, Justin Bieber has none other than Will.i.am jumping to his defense after the crowd turned on JB at the Billboard Music Awards. Trust us ... you MUST SEE Will state his case! It's bizarre and hysterical ... but does he have a point?