Cowboy and Indian Alliance stands against pipeline

Members of the Cowboy and Indian Alliance, including Native Americans, farmers and ranchers from across the United States, prepare for a horseback ride to demonstrate against the proposed Keystone XL pipeline in front of the U.S. Capitol, in Washington, D.C., April 22, 2014.

As part of its "Reject and Protect" protest, the Cowboy and Indian Alliance is organizing a weeklong series of actions by farmers, ranchers and tribes to show their opposition to the pipeline.

Washington, D.C.

Members of the Cowboy and Indian Alliance ride horseback down Independence Avenue as part of a demonstration against the proposed Keystone XL pipeline, April 22, 2014.

Washington, D.C.

Native Americans from various tribes work together to erect a large tepee as part of a demonstration against the proposed Keystone XL pipeline on the National Mall, April 22, 2014.

Washington, D.C.

Nineteen-year-old Gianna Strong of the Sisseton-Wahpeton Tribe in Morton, Minn., pours water into the U.S. Captiol Reflecting Pool during a ceremony to demonstration against the proposed Keystone XL pipeline, April 22, 2014.

Washington, D.C.

Shane Red Hawk (R) of the Sicangu Lakota Band of the Rosebud Sioux Tribe from Rosebud, S.D., joins other members of the Cowboy and Indian Alliance for a horseback ride on Independence Avenue while demonstrating against the proposed Keystone XL pipeline, April 22, 2014.

Washington, D.C.

Amy Ray (L) and Emily Saliers of The Indigo Girls perform during a demonstration against the proposed Keystone XL pipeline on the National Mall, April 22, 2014.

Washington, D.C.

Shane Red Hawk of the Sicangu Lakota Band of the Rosebud Sioux Tribe from Rosebud, S.D., joins other members of the Cowboy and Indian Alliance for a horseback ride on Independence Avenue while demonstrating against the proposed Keystone XL pipeline, April 22, 2014.

Washington, D.C.

Landowner Bob Allpress (C) pours water on the ground during a traditional water ceremony with members of Indian tribes to show the threat that the Keystone pipeline XL poses to water resources while demonstrating on the National Mall, April 23, 2014.

Washington, D.C.

Members of the Cowboy and Indian Alliance, including Native Americans, farmers and ranchers from across the United States, hold a horseback ride while demonstrating against the proposed Keystone XL pipeline in front of the U.S. Capitol, April 22, 2014.

Washington, D.C.

Samantha Jones and Tashina Red Hawk of the Sicangu Lakota Band of the Rosebud Sioux Tribe from Rosebud, S.D., and Casey Camp of the Ponca Nation help raise a large tepee as part of a demonstration against the proposed Keystone XL pipeline on the National Mall, April 22, 2014.

Washington, D.C.

Members of the Cowboy and Indian Alliance, including Native American tribal leaders and non-native farmers and ranchers from across the United States, march past the U.S. Captiol while demonstrating against the proposed Keystone XL pipeline, April 22, 2014.

Washington, D.C.

Bryan Brewer (R), president of the Oglala Sioux Tribe of South Dakota walks up to Indian teepees that are on the National Mall as part of a protest against the Keystone pipeline, April 23, 2014.

Washington, D.C.

Members of the Cowboy and Indian Alliance, including Native Americans, farmers and ranchers from across the United States, prepare for a horseback ride as part of a demonstration against the proposed Keystone XL pipeline, April 22, 2014.

Washington, D.C.

Samantha Jones (L) of the Sicangu Lakota Band of the Rosebud Sioux Tribe from Rosebud, S.D., and Brandie Molina help raise a large tepee as part of a demonstration against the proposed Keystone XL pipeline on the National Mall, April 22, 2014.

Washington, D.C.

Native Americans from various tribes work together to erect a large tepee as part of a demonstration against the proposed Keystone XL pipeline on the National Mall, April 22, 2014.