Flor Alvarado is in the kitchen of her mobile home, listening intently to a virtual meeting and taking notes while Alexa and Alison, her twin seven-year-old daughters, play quietly in the living room. Alvarado lives in Bakersfield, at the bottom of California’s sweltering San Joaquin Valley, where it’s not uncommon for temperatures to reach triple digits. The air conditioner is humming trying to keep the home cool as the voice of a community activist blares from Alvarado’s phone screen. She glances at her girls; it is almost time for dinner.