The idolisation of Hitler by the far right. Of course they love the industrial slaughter of Jews, Gypsies, communists, intellectuals, homosexuals, etc. But he was a catastrophically bad war commander whose miscalculations and idiotic maneuvers led to the total destruction of his country and the deaths of millions of his people. They don't like to discuss that. All that matters to them is his success at slaughter. It's what they want again.