I've never heard of someone being that violent before
Everytime I've been around people who were high they were just reeeeaaaaally 'mellow'... or whatever you'd call it... And they definately wouldn't attack people...
But I guess weed (and alcohol for that matter) can have different effects on different people (and there are also different kinds of weed)... Because I know there are people who get violent when they're drunk...