a group of protesters with posters picket near the factory building. boycott concept. strike of workers. public discontent

banner boycott building chemical chimney clean concept conditions confused confusion crowd demonstrate demonstration demonstrator disagreement discontent disobedience ecology energy environment environmental factory group human industrial industry international low movement nature negative people picket placard plant political polluted polluting pollution poster posters production protect protection protest protestant protesters protesting public smog smoke station strike toxic unfair wages workers working