What people, from other countries, fail to realize is that our thieves are very violent and usually have guns. When someone breaks into your house you don't ask questions, because the majority of the time they will kill you as soon as look at you. They don't like to leave witnesses. Our poor, underprivileged minors still manage to find enough money to buy an illegal gun and know they won't spend much time in jail when caught...if they are caught.
So you are agreeing that the US is a much more dangerous and violent place than Europe. And a big part of that is easy access to guns by everyone, even minors.