An ex-con killer who worked for an NYC anti-violence group is being eyed by cops for slashing a man in the Bronx, The Post has learned.
The Bronx Rises Against Gun Violence worker — who was twice charged with murder — allegedly attacked a stranger around 3 p.m. May 5 near the nonprofit’s Boston Road office, police sources said.
The 38-year-old victim told police he was walking to a deli in the East Bronx when the stranger slashed his left cheek and chin…