(I wasn’t able to read everything here, so apologies if this argument has already come up.)
When there are more gun owners, the likelihood that someone will assume that you own a gun rises.
When an armed burglar enters a house in America, and discovers that the owners are not on vacation after all, he will shoot first. Because that’s the smartest course of action for the burglar at this point.
When an armed burglar enters a house in Austria, and discovers that the owners are not on vacation after all, he will run away. He will assume that the owners do not in fact own a gun. And even if they did, they’re probably aware that they could be charged with murder for shooting a burglar who hadn’t actually drawn his own gun. So the smartest course of action is for the burglar to just get out.
Likewise, when an American cop sees a suspected drug dealer reach into his pocket, he will assume he is going for “his gun” and shoot. When a racist Austrian cop sees a suspect reach into his pocket, he is more likely to assume that the suspect is trying to dispose of the drugs he was dealing and tackle him.
I remember reading a specific warning in a German-language travel guide about the US. It basically warned tourists to KEEP THEIR HANDS ON THE WHEEL when stopped in traffic by the police. And to never, ever, get out of the car without being specifically asked to.
I also remember being quite shocked by news images of evacuations after Hurricane Katrina - at gunpoint. Just because people were afraid that some of the evacuees might be armed.