Police Your Planet - Lester Del Ray - Bog

Of all the cities on all the planets of the Solar System, Marsport was the most corrupt. So when one-time prize-fighter, cop, and reporter, Bruce Gordon ends up with a one way ticket to Mars, it was only natural that he would find himself walking a beat collecting graft like the rest of the force. Just trying to survive, he finds himself caught in the middle between two rival gangs as they battle for control of the planet.