Youtube and Facebook, while convenient, aren't really appropriate mediums for them to share this sort of footage. Liveleak comes to mind as a service better suited for a public repository of this video. Archival of footage shouldn't be dependent on a third party platform that can, at will, delete every single video on a whim. Likely for this sort of thing a diligent archivist will need to put in the effort of storing…
Liveleak, seriously? I'm not convinced that a site known for hosting gory and violent videos is really what these human rights activists are looking for.
[Edit] Some context: https://www.businessinsider.com/profile-of-hayden-hewitt-fou...