People protesting the killing of George Floyd swarmed around the statue of former Philadelphia mayor and police commissioner Frank Rizzo, covered it in graffiti and tried to pull it down. The city cleaned up the statue and surrounded it with a phalanx of police officers the next morning — only to remove it in the middle of the night a few days later. Why did the statue become a symbol of police brutality, and why were the recent protests literally a tipping point? Philadelphia Inquirer writer-at-large David Gambacorta examines Rizzo’s record and his legacy on policing in the city.