Change is coming. He’d go undercover to stop the rapid decline the city was in. Harry didn’t care if the powers that be wanted him on their police force. Harry was going to take matter in his own hands, and fight for justice.
He decided to hide his identity to evade both the authorities and the criminals, although it was hard to distinguish between the two. In a city quickly losing it’s identity it shouldn’t be hard to hide in plain site. But he might, also, stick out like a sore thumb fighting for the good guys. It’s worth it to save the city he loves.