ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti tˈuː, hiː wʌzɐ lˈiːdɚɹ ɪnðə tɹˈeɪl ʌv bɹˈoʊkən tɹˈiːɾiz, ɐ kˈæɹɐvˌæn tə wˈɑːʃɪŋtən, dˌiːsˈiː tə kənvˈɪns ðə bjˈʊɹɹoʊ ʌv ˈɪndiən ɐfˈɛɹz tʊ ˈɑːnɚ fˈɛdɚɹəl tɹˈiːɾiz wɪð nˈeɪɾɪv ɐmˈɛɹɪkən tɹˈaɪbz.
In 1972, he was a leader in the Trail of Broken Treaties, a caravan to Washington, DC to convince the Bureau of Indian Affairs to honor federal treaties with Native American tribes.