Dennis Banks was a prominent Native American activist and co-founder of the American Indian Movement (AIM), known for his role in advocating for the rights of Indigenous peoples and addressing issues like land rights, treaty violations, and cultural preservation. He played a significant part in various resistance efforts during the 1970s, becoming a key figure in events such as the Trail of Broken Treaties and the Wounded Knee incident, where he helped draw national attention to the struggles of Native Americans.