The Chicago police officer who fatally shot a college student and an unarmed grandmother in December has filed a lawsuit against the estate of the teenager he killed, saying he—the officer—suffered “extreme emotional trauma.” Officer Robert Rialmo claims Quintonio LeGrier swung at him with a baseball bat, causing him to open fire, killing both LeGrier and an unarmed bystander, 55-year-old Bettie Jones. Recently released audio shows Quintonio LeGrier called 911 seeking help three times in the minutes before he was shot but was treated dismissively by dispatchers, one of whom hung up on him. Police were finally dispatched after a fourth call from LeGrier’s father saying his son was wielding a bat.