This thesis is a comparative analysis of Native American and African American activist strategies from the immediate post-WWII era to the height of the Civil Rights Era using a term I call "genocide activism." Genocide activism is when a group or individual uses the term genocide or references the 1948 UN Genocide Convention to criticize and denounce certain conditions, peoples, or governments for past or present injustices. Using the Civil Rights Congress (CRC) and the National Congress of American Indians (NCAI) as comparable organizations in the immediate post-WWII era and the Black Panther Party (BPP) and the American Indian Movement (AIM) as comparable groups in the Civil Rights Era, this thesis analyzes the nuance of activism throughout these three decades. The CRC’s and the NCAI’s political and legal forms of activism demonstrate the constraints and benefits of working within governmental institutions. The BPP and the AIM represent a shift in activist strategies to radicalism and similarly illustrate the expansion and development of the term "genocide" to an all-encompassing term for social injustices.