I remember last year on youtube stumbling across a research presentation being given by a phd candidate(?) at an Australian university, about using social media

I remember last year on youtube stumbling across a research presentation being given by a phd candidate(?) at an Australian university, about using social media posts and community mapping to track down and identify members of the international Uyghur diaspora activist community. The presenter seemed to be presenting it from a kind of neutral ethnographic research stand point. It was kind of a shock to think of this happening at an Australian university.