Ключевые слова: activism, activist, apocalypse, banner, ca, california, campaign, change, children, city hall, civic center, climate, community, crowd, demonstrate, demonstration, earth day, ecology, energy, environment, friday, future, global, government, green, group, help, marching, message, mother, movement, people, planet, politics, poster, protection, protest, protester, protesting, renewable, san francisco, sign, strike, superior courthouse, teenager, warming, world, young, youth,