Three people were killed and four others were injured when an argument led to gunfire at an after-hours strip club on Sunday morning in Detroit, officials said.Police responding to the 7.21am shooting on a largely residential street found three men who had been fatally shot, Detroit Police Chief Todd Bettison told reporters at a news conference.Four more people – two men and two women – were taken in private cars to area hospitals.All the victims are thought to be in their 20s and 30s,...