In 1965 he joined Charlie Perkins and other Aboriginal activists, along with white students from
New South Wales, on the
Freedom Ride, to draw attention to segregationist policies and poor living conditions of Aboriginal people in the state. From 2000, he was inaugural co-chair of
Cricket Australia's
National Indigenous Cricket Advisory Committee (formally established in 2001). For some of his tenure in this role, he shared the role with former SA premier
John Bannon. Copley stepped down from the role at the end of 2012, as of 2013. He was also inaugural chair of
Tandanya National Aboriginal Cultural Institute, among other positions. In later life, Copley focused on reclaiming and protection Aboriginal cultural heritage, and was involved in several
native title claims for the Kaurna and Narungga people. He also worked with the
World Archaeological Congress, promoting
Indigenous rights across the world. He took on the role of Indigenous host of the WACs symposium on Indigenous Cultural Heritage held in
Burra, South Australia in 2006. From 2002 until 2012, he was chair of the Ngadjuri Alspa Juri Lands and Heritage Association, and from 2012, chair of the Ngadjuri Elders Heritage and Landcare Council. After meeting in
Burra, South Australia in 1998, Copley set up a research partnership with Claire Smith, and Gary Jackson of
Flinders University continued for the rest of his life and beyond. In the early 2000s, working with his nephew Vincent Branson, he worked with Flinders to create Ngadjuri Heritage Project. This project identified more than 600 Ngadjuri sites, recorded
oral histories, and did much research. From 2018 he held a teaching role at
Flinders University on projects relating to Ngadjuri heritage. ==Other activities==