Marvin Big Monster McCullough, 37, was shot and killed in Denver’s Whittier neighborhood on the evening of March 30, 2024. McCullough, a Black/African American man, was seated in the driver’s seat of a Mercury Cougar at a barbecue hosted by members of the Crips at Fuller Park near East 29th Avenue and Gilpin Street when he was struck by five gunshot wounds to the right side of his body. He was taken to a hospital, where he died; the Denver Medical Examiner’s Office ruled his death a homicide.

Police identified 30-year-old Zachary Rice as the primary suspect and say Rice and McCullough were in the same gang but had been involved in an ongoing feud for about a year. A witness told investigators Rice had admitted the shooting, saying it was either him or McCullough. A vigil for McCullough at the same park three days later turned violent when a separate confrontation led to another shooting that injured three people; those victims were expected to survive.

Does anyone who attended the March 30 barbecue or the subsequent vigil have details that could help clarify what happened?