Glenn Danzig is the hero we need.
Much like a vampire, Danzig does not like photograph flashes. He just doesn't like photographers in general, and has a history of getting in fights with them. It's been well established that he has a strict no photography policy.
Leave it to this one photographer to test Danzig's patience. His name is Navid Farsi, and you can see in the TMZ-captured video below, Danzig snatches his camera during the middle of his set and throws it side stage. DANZIG WILL NOT TOLERATE ANY BULLSHIT!
Farsi, thinking he's clever, then approached Danzig after the gig, again with a camera on, and tried to egg him on. The result? A headlock for Farsi!
This idiot photographer apparently likes to get himself attention, as he once "sugar bombed" the singer of Maroon 5 for some reason.
Lesson here: Don't fuck with Danzig