> It's a pretty sad realization that perhaps the reason we have such violent police is, in part, because we have such a violent society.
In terms of violent crime overall the US isn't an outlier, it is located at the median of the OECD in terms of violent crime. The outlier for the US is murder, overwhelmingly due to the mass proliferation of illegal gun possession.
This has been written about for decades and remains true today.
"America doesn’t have more crime than other rich countries. It just has more guns."
https://www.vox.com/2015/8/27/9217163/america-guns-europe
"The seminal work here is a 1999 book by Berkeley's Franklin Zimring and Gordon Hawkins, called Crime Is Not the Problem. Zimring and Hawkins set out to examine what was, at the time, the conventional wisdom: that America had a uniquely terrible crime problem, one without any parallel in other developed democracies.
"They found, pretty definitively, that the conventional wisdom was wrong. "Rates of common property crimes in the United States are comparable to those reported in many other Western industrial nations, but rates of lethal violence in the United States are much higher," they write."
... "A landmark 1997 study actually tried to answer this question. Its findings — which scholars say still hold up — are that America doesn't really have a significantly higher rate of crime compared to similar countries. But that crime is much likelier to be lethal: American criminals just kill more people than do their counterparts in other developed countries. And guns appear to be a big part of what makes this difference."