"Yellow vest" protesters and environmental protectors demonstrated on the streets of Paris on September 21, 2019. /VCG Photo

According to France24, the peaceful march aimed at urging government and corporations to eliminate greenhouse gas emissions, and save the burning Amazon rainforest and stop the Arctic from melting. /VCG Photo

Among the crowd were demonstrators who hoped to revive the "yellow vest" movement that started last year to protest against the perceived economic injustice raised by French President Emmanuel Macron. /VCG Photo

Police say that there were at least 163 people arrested on Saturday. /VCG Photo