That's like saying Gavrilo Princip started World war 1. Of course he played a part but the people owning media and influencing the public debate for their own political goals play a much bigger part.
I would also argue that the killing of George Floyd sparked the BLM riots, if that helps. But yes, I agree that media helps people become aware of these atrocities and certainly riles them up. But it’s not like pogroms didn’t happen before the internet.