TL;DR like the Holocaust, the memory of the Holodomor is carefully cultivated and nurtured, because it happens to be politically convenient at the moment.
Mass deaths in Vietnam or Cambodia as a result of American aggression are not politically convenient, and so the Vietnamese and Cambodians are basically told to walk it off, these things happen after all.
For that matter, the Ukrainian nationalists of the 1930s were quite aware of the famine, and they didn't much care. At that time, Poles (and Jews) were the traditional Ukrainian folk enemies, and Soviet Ukraine offered greater cultural autonomy than did the aggressively polonizing and centralized Polish Second Republic. Like the fascists that they were the OUN were all about The Nation, but they were at best indifferent, if not actively hostile to the people living in it.
TL;DR like the Holocaust, the memory of the Holodomor is carefully cultivated and nurtured, because it happens to be politically convenient at the moment.
Mass deaths in Vietnam or Cambodia as a result of American aggression are not politically convenient, and so the Vietnamese and Cambodians are basically told to walk it off, these things happen after all.
For that matter, the Ukrainian nationalists of the 1930s were quite aware of the famine, and they didn't much care. At that time, Poles (and Jews) were the traditional Ukrainian folk enemies, and Soviet Ukraine offered greater cultural autonomy than did the aggressively polonizing and centralized Polish Second Republic. Like the fascists that they were the OUN were all about The Nation, but they were at best indifferent, if not actively hostile to the people living in it.