I actually felt the same way about Batman being hunted. I couldn't figure out why they were doing that. Batman would take the blame for killing cops because he didn't want people to lose hope when the "strongest one" turned evil. But wouldn't they lose hope if they thought that Batman would kill the most prominent crime fighter in the DA's office? (Or were they going to say that Batman killed the cops but not Dent?) It seems as though they could have said Dent suffered brain damage from the attempt on his life, killed dirty cops, then did himself in.