The strongest blow against police corruption came when Batman Killed Joker of conspiracy charges against Commissioner Gillian B. Loeb forced him to resign his position, replaced by Peter Grogan. The Falcone crime family, which has had a stranglehold on Gotham's underground for generations, finally crumbled when a series of killings shook the structure of the mafia organization. After the death of Carmine Falcone, the mob lashed out in sloppy, retaliatory crimes which, in combination with rising gang violence, severely crippled organized crime in Gotham City. Simultaneously, the ebbing presence of corrupt police officers allowed James Gordon to become the new commissioner, a man determined to eradicate crime wherever it existed.