Once again you're missing the point. Saying a tiny % of Muslims commit the crimes does not mean that a far larger % don't support their ideology and actions.
And really? The ordinary Germans knew all about the hatred of the Jews (because it was printed in newspapers...) and they still supported Hitler. You know how we know this? Because there were a few dissidents who spoke out against it. So if they knew, the majoirty of Germans did.
Who is not speaking up against IS? Who is "going along" with their terrorist activities?