Straight from the Communist Party USA:
The September 21st People's Climate March in New York City is a way to meet and help others in our communities who are engaged in building this demonstration. In many areas, coalitions are working to send people to NYC, in others local actions in support of the People's Climate March are being built. We urge all clubs and members to contact local organizing efforts and offer help and participation. In many areas the Sierra Club is teaming up with activists from 350.org and other environmental groups to organize transportation.