He studied at the Royal College of Surgeons ' Medical School ( Dublin ) , where he qualified as a medical doctor , before joining the Royal Air Force . He then worked as a general practitioner in Derry , also acting as club doctor to Derry City F.C. and local amateur boxing clubs . Concerns about housing conditions led him to join the civil rights movement . He was present at Bloody Sunday
Bloody Sunday
Bloody Sunday (1972)
Raymond McClean