I dunno; I've never had trouble with cops, other than those in the socialist paradises of the workers and peasants.
Here in America, though, I've never met a cop who was less than professional.
Granted, I've had experiences with cops only in the states of Nebraska, Pennsylvania, New Jersey, and Illionois, and cities such as Chicago, New York City, Baltimore, Kansas City, Boston, Providence, Cincinnati, Cleveland, Columbus, Indianapolis, Camden, &c., &c., &c.
But maybe that's not a large enough "sampling" of America's cops, to get an accurate view of how they really are.
I can think of a couple of long-ago instances where a situation could have turned ugly, but it never did, because both sides kept their heads and their good manners.
I think primitives attract cops because primitives have a chip on their shoulders.