So then how did they manage it with nazism? Was that magic? No. Keep in mind an entire people went to war, not just war but total war based on it. Now it is all but eradicated.
You're not answering any of the questions I put to you. Just telling me I'm insane.
They managed limit the influence of Nazism but it still exists.
https://en.wikipedia.org/wiki/NSU_murders
What you are suggesting is the equivalent of eradicating right wing politics.
The problem isn't Islam, it's Salafi jihadism.