I guess it's time to repeat my comment from a while ago: how someone responds to a comparison between the Holocaust and what Israel is doing to Palestine, tells you a lot about their underlying beliefs.

Because if someone responds by accusing you of "trivializing the Holocaust", then the unspoken premise they're operating on is that the situation in Palestine is "not that bad"; that's the only way the accusation makes sense.

Someone who holds both things to be genocidal, would not interpret a comparison as "trivializing" to begin with.