The fatal shooting of a black man by a police officer in the US city of Brooklyn Center in Minnesota was an accident, the police chief has said. Daunte Wright, 20, was shot after the officer meant to use a Taser, but mistakenly drew her gun instead, Chief Tim Gannon told reporters. Late on Monday, crowds defied the curfew to gather for a second night outside Brooklyn Center Police headquarters. Witnesses said some threw fireworks and bottles at officers who responded with tear gas and stun grenades.