He became more politically involved in the last two years of his life, becoming one of the leaders of the Jazz and People's Movement. The group demonstrated during the taping of talk and variety shows during 1970-71 to protest the lack of jazz artists as guest performers and members of the programs' bands. His working band during those last years featured reed players Billy Harper or Bennie Maupin, pianist Harold Mabern, bassist Jymie Merritt and drummers Mickey Roker or Freddie Waits. Maupin, Mabern, Merritt, and Roker are featured on the well-regarded three-disc, "Live at the Lighthouse", recorded during a two-week engagement at the Hermosa Beach club, California, in July 1970.