It's okay to be open radical ways to help the environment but be wary of any organization that condones violence or uses scare tactics as a way to get their word out. Some fringe environmental groups spike trees with dangerous metal rods that can seriously injure professional lumbermen. While some animal rights activists spill red paint on fur-wearing fashionistas to send a graphic message. Before you become a member of any organization, research its background and practices in order to have a better picture of their goals and agendas.