Being the cop you wanted to be when you were growing up is the same thing as 'truth justice and the american way'. Superman trying to lift everyone else up to be better.
But no, you want everyone to just suck up and give respect to every Policeman or Soldier or Fireman just because they wear a uniform.
And since you brought this up, let me bring up something about your (and GM's) model of what Supes should be - Bruce Springsteen. One of the reason became so popular was his love of America and the working class; which, by the way, includes the police, military, and firemen. That's why when he comes out with something like "Born in the USA" (about US treatment of Vietnam Vets after they got home from the war) and "Ameircan Skin (41 Shots)" (About a real incident of NYC cops shooting an unarmed suspect), it gets people to take notice and think.