I'm working under the assumption that you haven't read a lot of the comics but if you have, forgive me.
You gotta understand how deeply fucked Gotham is. Like, evil bat god sealed under the city, portal to hell in the asylum, crazy juice from the Lazarus Pit leaking into the water supply which has probably already got chemicals in it that are fucking folks up mentally (along with likely lead pipes but I'm just guessing.), the Illuminati basically running the city, corrupt cops all over, mafia, monsters, people who are basically monsters, there was even a whole plot line where it got kicked out the United States. If any city in real life had that many problems we'd probably level the fucker and start over.
You can't "pay your taxes" out of something like the Illuminati trying to use zombies to assassinate the police chief.
Didn’t Harvey dent become two face because of Batman? Atleast in the movie it looks like Harvey would’ve faired a lot better without Batman.
In the comics he got hit in the face with acid by a crime boss, iirc during a trial.