Climate activists filled the streets of New York City today for the People's Climate March. People came from across the country and around the world to support meaningful action on climate change just days before world leaders assemble for the UN climate summit. Initial counts estimated march attendance at more than 300,000 people, three times the number predicted by organizers before the event. The march included representatives from over 1,500 organizations, including students, scientists, faith groups, labor unions, businesses, environmental groups and more. We talked to just a few participants and asked them to share why they came to march today.