Just as Dent is frustrated with the justice system, the Joker is frustrated with the criminals. This is something Batman does routinely, but Batman reminds Dent that Dent can’t get away with that sort of thing — it’d destroy his credibility as an insider. Weurtz gives up Maroni, who points to Ramirez, who helps him get Gordon’s family, who naturally gets Gordon. Gordon rushes in to get the thugs, but Batman discovers the thugs are hostages and the hostages are the thugs. He then goes to rescue Gordon, who is trying to stop Dent from killing his family.