Upon return in 1960, Hamlin landed a job at the Detroit News assisting drivers. His involvement post the 1967 Detroit rebellion led him to join in the creation of Inner City Voice, a local periodical circulating in Detroit communities. The role of the Inner City Voice community in shaping the emergent Dodge Revolutionary Union Movement (1968) and League of Revolutionary Black Workers (1968) has been documented in numerous periodicals, books, and academic scholarship. In the updated edition of Detroit: I Do Mind Dying Hamlin explains, "What distinguished the League of Revolutionary Black Workers was that we were able to engage masses of black workers at a time when people didn't know how to approach or mobilize them".