Trevonne Winn, 24, was gunned down as he stood outside his uncle’s fast food restaurant in Brooklyn.
CCTV footage shows Mr Winn speaking into his mobile phone outside the Crown Fried Chicken shop when a black-clad man walks calmly over, pulls a pistol and shoots him twice.
As Mr Winn collapses and lies twitching on the ground, his attacker flees the scene and witnesses rush from local shops to see what is happening.
Despite Mr Winn’s desperate efforts to get back on his feet, he is soon slumped on the pavement, immobile and apparently dying.
