There are plenty of brawlers where you beat up corrupt cops.
Streets of Rage 4 might be the most pro-cop game in the series. Sure, the cops lock up and pick fights with the protagonists, but that's only because the villains framed the protagonists. The game portrays the cops as otherwise fine, and in the end Adam rejoins the police force, welcomed back by that boss cop lady. And the cops beat up minor thugs if you let them.Streets of Rage 4 for one