Is Green Day’s Billie Joe Armstrong Crazy? – Profanity Fueled Rant at iHeart Radio Festival [VIDEO]

Green Day's lead singer, Billie Joe Armstrong, went ballistic over the weekend at the iHeartRadio music festival in Las Vegas.

The singer was signaled that just one minute remained in the band's set and that was enough to set him off.  An edited version of the rant is below, and click though here for the unedited version.

Billie Joe Armstrong is entering rehab.  Coincidentally, the group's latest album Ole! is out tomorrow.