Cummins joined the
Aboriginal Tent Embassy at age 16 and was at the centre of the Aboriginal rights movement in the 1970s. She was a founding member of the Australian Black Panther Party, which was inspired by the American
Black Panther Party. She campaigned for medical, educational, and legal services, land rights and monitored police conduct on the "pig patrol". She was arrested for using obscene language to an abusive police officer, and absconded bail and fled to
New Zealand. In 2012 she attended an international gathering of Black Panthers in New York hosted by
Kathleen Neal Cleaver. In 2014 she spoke out against black-on-black violence and sexual assault. ==Painting==