Police don’t know if shooting was accidental as Labor attacks opposition vow to scrap gun buyback announced after Bondi massacreFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastThe shooting of an 11-year-old boy in Sydney’s north-west was a “tragic reminder” of the danger of guns, the New South Wales premier, Chris Minns, has said while the opposition defends “backflipping” on a gun buyback.The child was transported to W