It's a "freedom culture".
The Second Amendment supports the rest of the Bill of Rights.
The largest mass shooting of civilians in US history occurred on December 29, 1890, near Wounded Knee Creek in South Dakota. It was the US government doing the shooting.
If anyone wants to live in a country where you can get tossed into jail for flipping the bird at a traffic camera, fine. I'll take my chances with "military grade" rifles in private hands.
The number of murders in the US involving rifles annually is about the same number killed by lightning strikes and much less than the number who drown or die from AIDS. Of all the countries in North, Central and South America, the US has one of the lowest homicide rates.
You can't compare homicide rates to Canada, the UK and Australia, which have far less racially and ethnically diverse populations than the US.