system
Given the following post, respond as if you're commenting on Reddit:
human
[The Dark Knight] Why does Two-Face seek revenge on the GCPD rather than Joker?

It was Joker who killed Rachel and disfigured Harvey in the first place, yet Harvey took his anger out on the city and police force he once served with his life. What gives? Why not actually go after the man responsible for killing the love of your life?
gpt
Not only did Joker convince him that the GCPD was at fault, but Dent repeatedly voiced concerns about crooked cops in Gordon's unit and Gordon ignored him every time. And then the exact cops Dent was worried about were the ones who kidnapped him and Rachel.

So on top of Joker's manipulation, he had legitimate reasons to be pissed at Gordon and the rest of the GCPD.