No they don’t, the vast majority (99%?) of police interactions with the public are non-violent. I spoke with a cop in my city who told me that he did some training where 14 out of 15 training scenarios were ‘violent encounters’. The man was a career officer with 25+ years and he said almost every interaction he has with the public is non-violent. Violent encounters happen, but cops are trained like every interaction is going to turn violent.
Re: on average every American owns a gun
Something like 50% of the guns are owned by 3% of Americans or some ridiculous number. Roughly 1 in 3 adult Americans own guns.
Other countries don't arm every cop all the time, so every encounter isn't a potential standoff. We face every cop knowing that he is jumpy and checking your every move.
That is factually incorrect. 4 in 10 Americans (at most) own guns. Few of them carry them around.
The rest of the civilized world has decided that this isn't a good way to live. But here in America we want to be 100% certain George III isn't coming back, and if the cost of that is unarmed people occasionally murdered by the people assigned to protect them, that's just the way it is.