Ключевые слова: 2019, 27 september, activism, activist, banner, canada, canadian, change, children, climate, climate change, climate march, climate policy, crisis, crowd, demonstrate, demonstration, earth, environment, environmental, future, global, global warming, green, greta thunberg, how dare you, kids, march, montreal, mother earth, movement, people, politics, poster, protest, protester, protesters, protesting, quebec, sign, strike, warming, youth strike for climate,