Can popular media personalities who promote violence be held accountable if their propaganda was acted upon? Could they be held accountable if they promoted violence on the behest of their government? To clarify the question, here are two examples with different outcomes:
Leni Riefenstahl was instrumental in Nazi propaganda, including propaganda directed against Jews prior and during the Holocaust. Although she was arrested, in the end her role was classified as "fellow traveler" and she lived free into the 21st century.
Hassan Ngeze of RTLM called for extermination of Tutsis in Rwanda. His broadcasts caused numerous Tutsis being murdered. He was subseqently convicted as a war criminal.
Since 2014 Russian state-controlled TV broadcasters were spreading vicious rumors against Ukrainians, successfully convincing Russian population that Ukrainians were evil. There's no doubt that they spread the lies knowingly; there is even a direct testimony about that now.
Thus the question: could Russian TV personalities who promote violence against Ukrainians be held criminally responsible for the war crimes?