I know that it's a challenge. That's the whole point. You establish dominance. It's just a lot easier to win that challenge then most people assume. While acting scared by doing stuff like avoiding eye contact really only encourages them.

Wanna know a secret? Most dogs actually scare real easy. They are not nearly as confident as most people assume. Just look them in the eyes with confidence and move towards them without hesitation. That's normally enough to convince them that you're stronger then they are.
Source: Years of trying to touch all the dogs I meet.

Depends on the country. In Austria you need a license for semi automatic and fully automatic is illegal. But for things like a bolt-action hunting rifles you only need to be over 18. I'm pretty sure that most people here don't even realize how easily they could buy a rifle.

You're an idiot.