I wouldn't miss one (or all) tweakers that mysteriously disappear. However, on the off chance someone here is actually considering confrontation with a weapon of any kind, don't. Document and call the police. Pop the guy you'll be doing time. You MIGHT get away with gun display but you had better get on the phone and tell the cops before he does. Dropping the dirt bag is a delicious thought but not worth doing time. That would be a tragic waste.