Centered on a search for truth and beauty, his work spans film, television, academia, interracial coalition building, theatre, education, religion, photography, digital archives, exhibitions, and grassroots community organizing.

Dr. Walker is the author of the critically acclaimed book, No More, No More, Slavery and Cultural Resistance in Havana and New Orleans, executive producer of the award-winning television program How Sweet the Sound Gospel in Los Angeles (KCET), founding director of the Long Beach Indie International Film and Entertainment Festival and co-curator of major exhibits at the University of Southern California, the California African American Museum, and the Rock and Roll Hall of Fame.