US federal agents shot and killed 37-year-old Alex Pretti in Minneapolis on Saturday, the second such killing in the city in less than three weeks. Pretti was an intensive care nurse with no criminal record, yet authorities raced to portray him as a violent ‘gunman’ who threatened to ‘massacre’ law enforcement. Video evidence directly contradicts this account. Protests have since erupted across the US and the Trump administration has said it is ‘reviewing’ the incident. Lucy Hough speaks to the Guardian columnist Moira Donegan. Help support our independent journalism at theguardian.com/infocus