Newly emerged surveillance video shows the moment an off-duty NYPD officer shot and killed an unarmed motorist who approached his vehicle after an apparent traffic dispute in Brooklyn earlier in the week.The video obtained by nypost.com/2016/07/08/video-surfaces-of-nypd-cops-road-rage- shows Delrawn Small approaching the vehicle of Officer Wayne Isaacs as they were stopped at the intersection of Atlantic Avenue and Bradford Street.