On 26 January 85 years ago, a group of Aboriginal men and women gathered at Australia Hall in Sydney to hold the first Day of Mourning, calling on the government to grant Aboriginal people full rights of citizenship. Playwright and Quandamooka man Wesley Enoch speaks to Laura Murphy-Oates about the ‘neglected’ history of protest on this day that’s as old as Australia Day itself, and why we need to move beyond celebrating the ‘British colonial project’