As an adolescent, Dixon marched with Dr. Martin Luther King Jr. to end housing discrimination in Seattle, and was one of the first volunteers to participate in the busing program to integrate schools. King's assassination, on April 4, 1968, deeply affected Dixon and propelled him towards the Black Power Movement. That week, Dixon and his brother Elmer were in San Francisco for the West Coast Black Student Union conference, and during that time attended the funeral of Bobby Hutton, a member of the Black Panther Party killed on April 6 in a confrontation with the police. Following the funeral, Dixon met with some of the Black Panther leadership such as Bobby Seale and Kathleen Cleaver, who made a vivid impression upon him. The time spent in San Francisco lead the Dixon brothers to set up the first Black Panther chapter outside of California, in Seattle.