Badge of the Assassin [1985] [DVD]

Three black revolutionaries gun down two New York City police officers. The subsequent investigation puts a white assistant DA and a black police detective on the trail of the killers that leads from New York to San Francisco and down to New Orleans.

This is the true story, told from the viewpoint of the prosecutor, of the Jones-Piagentini case. NYPD officers Waverly Jones, who was black, and Joseph Piagentini are lured by a false call to a street corner and are ambushed and killed by a small band of black "revolutionaries". ~ imdb