Chief Arvol Looking Horse is the 19th-generation Keeper of the Sacred White Buffalo Calf Pipe, widely recognized as a chief and spiritual leader of all three branches of the Sioux tribe. He has dedicated himself to advocating for preservation and revival of Lakota traditions, beliefs, and practices. Chief Looking Horse was a major speaker at the 2015 Parliament of the World's Religions, and his prayers have opened numerous sessions of the United Nations.