On a late-October night, the high-energy music of the eight-piece ensemble Tamborazo Altera erupted from the Dance Palace. The crowd clapped in unison, and a man dressed as a clown shimmied through, splitting the group into two. A teenager clad in an orange jail suit danced with a 2-year-old in a dinosaur costume balanced on his hip.
The joyful gathering at the community center was hosted by the West Marin Organizing Project, a new initiative…