THE GREAT WALL OF LOS ANGELES, the longest mural in the world, visually tells the silenced and repressed stories of marginalized communities in Los Angles and California, beginning with Indigenous history and currently ending in the 1950s. A collaborative grassroots production conceived and directed by world-renowned Chicana muralist and activist Judy Baca beginning in 1978, the Great Wall has been painted by iconic Chicano movement artists alongside over 400 youth living below the poverty line with criminal records. For these youth, the Great Wall has been a paid opportunity to learn from and become artists themselves. Located in the Tujunga Wash of the LA River, the Great Wall currently spans a half-mile. It was designated a National Historic Monument in 2017, and Judy received a National Medal of the Arts in 2023 for the project as well as her entire life's work.

Currently, the Social and Public Art Resource Center, co-founded by Judy in 1976, is working on expanding the Great Wall to a full mile long, so that the history it depicts continues from the 1950s to the 2010s. The conceptualization, painting, and installation of the expanded mural will be completed in 2028.