The indigenous people of California were not at the top of the food chain. The California grizzly was. They had no written language, no agriculture, no horse, no wheel, no art, no architecture, no science, no medicine, no nothing. They lived for a thousand years in a mild climate, abundant local food and no need to advance. Why Los Angeles wishes to emulate these people is beyond me.
They were very good at basket-weaving, for what that’s worth.