I makes sense for the police to not want to be outgunned by the bad guy.
Here's the kicker: they aren't
outgunned. Criminals favor cheap, concealable handguns and shotguns. The few semiauto rifles that are "used" in crimes are usually guns that were confiscated as part of a search.
Despite the propaganda, the police are not engaging in urban warfare, and they do outgun the bad guys. I'm fine with that.
But I'm not a bad guy, nor should I be treated as one without the benefit of due process. Until that time, there's no reason I shouldn't be allowed to protect myself with the same tools the police do.