Nobody ever talks about the holodomor.
Because it's a lesser known event, and not filled with as much controversy as the Jewish Holocaust.
What I mean by "controversy", is people doubt whether 6 million Jews died during the holocaust, but don't doubt that many Eastern Slavs were starved to death.
There's also the extreme right narrative that the Holocaust never happened, so there is also that conspiracy to deal with, whereas Holodomor is generally not disputed in the historical context.
You can find fringe deniers of anything. Half the world denies the Armenian holocaust ever took place. Maybe if Armenians were disproportionately wealthy, had disproportionate power in America, and had disproportionate control over every aspect of the media, they could beat the Armenian genocide into our heads from K-12 and at every opportunity.