Johnny Wactor's Friend Organizes March in Downtown L.A. Month After Murder

Play video content TMZ.com Johnny Wactor's close friend is pressuring L.A. officials to find his murderers and hold them accountable ... organizing a march through downtown to keep the late actor's memory alive. Micah Parker -- a fellow actor and one of Johnny's best pals -- spearheaded Wednesday's march, and we talked to him in the street ... with him telling us Johnny's murder should be a wake-up call for the…