I used to wonder how Hitler did it.
Hitler had no good reason. Good reason to exterminate islam is everywhere. It needn’t be but the muslims are bent on becoming more and more threatening every day. Toleration of the intolerable is no virtue. If snakes move into your house, coming to terms with them is not an option.
If muslims want to become as peaceful as Buddhists or Methodists, fine but the evidence points 180 degrees away from that. How many options do you see to an undeniable existential threat?