In 2018, a video began circulating online that showed an outrageous act of barbarity–armed men in uniform escorting four unarmed women and children, and then summarily executing them.
Bellingcat has a two-episode podcast, The Executions and The Hunt, describing how the online OSINT and human rights community teased out clues in the video to ultimately identify the killers and bring a modicum of justice.
The podcast is disturbing in many ways, especially the ending where it seems unlikely there will be any punishment for the perpetrators of the atrocity.
But sometimes all anyone can do is shout the truth to whomever will listen.