I can’t speak for the other commenter, but I’m not naive enough to think conflict just appeared out of nowhere. It’s come from beefs between historic tribes and stretches back to before people wrote things down.

It’s more like “those cops were just regular people whose families were beating other people up, then someone with a lot more Big Sticks came over and told them they’re now part of a special group who are the only ones allowed to beat people up and gave them a shiny gold star plaque? to prove it”

Only instead of a gold star, it was drawing lines on a map and saying “this is yours, have fun”, and pretending to not see anything negative they do after that.