Yes, pot increases violence behavior. In the 70s, my girlfriend smoke it, did the big chicken, starting running after cars, jumping on their hoods, attempting to get at the occupants. They found her on my neighbors back porch eating dog food.
Gak~
When I was around heavy pot users many years ago, it was a world of quite a bit of violence, gun play, knife play, drug deals, prostitution, and even murder, quite a bit of death and all types of crime, just like today.
I think some people here are middle class straights, hang around with middle class straights, and think that the entire pot world is like that.
And I bet alcohol had nothing to do with that lol.