Ключевые слова: action, activist, anti, banner, california, carbon, change, climate, co2, community, crowd, day, democracy, demonstration, demonstrator, editorial, environment, environmental, francisco, gathering, global, government, green, meeting, movement, option, people, placard, political, politics, pollution, poster, protest, protester, protesting, public, rally, reform, san, sign, slogan, supporters, tax, universal, warming, world,