 Moss began his advocacy for civil rights in the 1960s, and over the decades has focused on violence prevention, including brokering a truce between gang members in the 1990s. He's pushed successfully for Metro Transit to hire black bus drivers. And Moss was also involved with The Way, a social justice and cultural organization located on Plymouth Avenue. It closed in the 1980s and is now the site of the 4th Precinct Police Station.