Because they have edjamafacashun.
They are the good guys. They will kill you and make it look like an accident so they can sleep with your wife.
It doesn't matter if you live in the first world and think like an inhabitant of the third world. Sooner or later your first world country will look like a third world country. As a man thinketh.
Third world people think only the police and military should be trusted with guns. Of course, they are then mass exterminated by the military and the police.
The reason the Founding Fathers put the 2nd Amendment into the U.S. Constitution is that mankind has no better angels. There are no "officially good people" because of a piece of paper that says they are supposed to obey certain rules. The military, police and politics attract psychopaths and sociopaths the way you know what attracts flies. They are drawn to it like a moth to the flame. When you advocate taking arms away from the law abiding you are advocating putting them solely into the hands of psychotics.
Manboons are not learning animals.