Remembering, discussing and learning about the Holocaust is important not only because it helps us gain a better understanding of the past, but because it also raises awareness about contemporary forms of antisemitism, xenophobia and hatred. It illustrates how these can create the preconditions for genocide.
I think these groups would be opposed to war because they would be the ones fighting them. The working class would have no choice to whether they live or die- that would be up to the leaders.
