Thinking that Hitler and nazism are no ordinary liberalism is the last mistake that marxist people must do. The demonstration that Hitler is one Devil who fell down from the sky is the main argument of publicists, journalists, teachers and the army of liberalism... which mostly do not even believe in God! Everything but History.
History contrarily teaches that A. Hitler made the most honest liberal politics of XXth century and that this is this honesty that made German nazis adventure shorter, as French Revolution of 1789.
Antisemitism was just useless for Napoleon before Hitler, who did not even need to seduce French people and win the general election as Hitler did. Antisemitism is just nazi's style, the orchestra of his "Titanic".