They already do train them like the military. In fact, since Obama, they've also been arming them as the military as well, not only with M4's and Barrett 50's, also with up armor MRAPS and hummers. That's not including other tactical wartime gear such as stingrays etc.

Train The cops as soldiers, don't be surprised when cops act as soldiers.

I realize that as we've been millennialing our military into occupying and policing, but make no mistake that's not what they're for. And it's the same issue with cops.

That's the whole problem! Police are to serve and protect the community. Instead they've become a paramilitary force in major cities where their job is now to serve, and protect the government and its institutions.