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, kids, march, montreal, mother earth, movement, no planet b, people, politics, poster, protest, protester, protesters, protesting, quebec, sign, strike, warming, youth strike for climate,