This study focuses on the development and practices of Critical Muralists--community-educator-artist-leader-activists--and situates these specifically in relation to the Mexican mural tradition of los Tres Grandes and in relation to the history of public art more generally. The study examines how Critical Muralists address artistic and organizational challenges, negotiate the politics of institutional power and grassroots communities, and promote critical processes for community empowerment and social change. The study provides an in-depth analysis of the practices of several Critical Muralists through the deconstruction of representative murals and their development processes. The study positions the work of Critical Muralists at the intersections among critical theory, post-colonial and subaltern theory, and critical pedagogy. The study argues that Critical Muralists use a complex, dynamic approach intent on community empowerment and social justice for their work with the public. The study identifies a close relationship between the practices of Critical Muralism and various critical theories, particularly as related to the fields of education, leadership, and civic activism. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]