The deadly shooting at the Kansas City Chiefs’ victory parade that killed one and injured nearly two dozen was the result of a personal dispute that exploded into violence — and cops have detained three people who may be at fault, authorities said Thursday. Kansas City Police Chief Stacey Graves emphasized that the Wednesday afternoon attack on the west side of the city’s landmark Union Station had nothing to do with homegrown terrorism or violent extremism. Instead, the shooting “appeared to be a dispute between several people that ended in gunfire,” Graves told reporters at a Thursday press conference. Two...