Combine all that lacking social programs and support with the culture around guns, which a lot of the populace owns, and you have by necessity a very militant police force. America has a lot of social issues which much of the populace does not want to address and the police end up arresting it all and putting them in prison. It impacts the middle classes a lot less and they don't want to pay for it so as a populace they suffer the consequences of those choices in their schools and criminal gangs and subsequently military-like police. There are other ways to do this but I highly doubt America will choose any of them in the coming decade.
Because they're all considered "leftist" if not "socialist" politics now, and the Overton window of acceptable discussion in the US has moved very far to the right over the last four years.