Cops are more than four times more likely than ordinary citizens to shoot someone who doesn't deserve it in any given armed altercation and kill citizens at 70 times the rate of other first-world nations
I believe there's a chicken-and-egg thing there. The cops are armed because the criminals are armed. Every time a civilian is shot, we're told that it's because the officers had reason to fear for their life. Even when the civilian is unarmed, the officer gets to use a weapon that can kill at a distance, and they have that weapon at their disposal.
And they actually ARE at risk: last year, 49 police officers died by firearm (two accidentally). (Another ten by vehicular assault, and two by the kinds of non-gun, non-car kinds of assaults that seem to make the headlines when civilians are killed.) In return, about a thousand people are killed by police. Many of whom, I suspect, were in fact dangerous... because they also have guns. Or at least, might.
I don't know how other countries avoided this chicken-and-egg problem. Mostly, I suspect, by limiting firearms before mass production made quality, portable, concealable firearms readily available. (I'd be perfectly content with an "originalist" reading of the Second Amendment. Go ahead and issue everybody a black-powder rifle, which is what "arms" meant in 1791.)
Regardless, I don't really know how to un-screw this pooch. And a thousand civilians will die this year, along with a few dozen police officers, because of it.