PHOTOS: ‘Cowboy & Indian Alliance’ in an Earth Day Protest Against the Keystone XL Pipeline

Native American tribal leaders hosted a traditional opening ceremony to begin a horseback ride as part of a demonstration against the Keystone XL pipeline at the U.S. Capitol April 22, 2014 in Washington, DC. As part of its "Reject and Protect" protest, the Cowboy and Indian Alliance organized a series of actions by farmers, ranchers and tribes to show their opposition to the pipeline. (Getty)