Combat Throwing

How did west germany combat extremism after ww2?
And try to stop it from ever taking over as it had in the 30s and 40s? Please just throw any ideas at me, simply in the planning stage of an essay.
West Germany is still occupied by elements of the US Army. Any extremism in the late 40s or early 50s would have been met by the US Army arresting and prosecuting the radicals.
Voennoe Delo: Cold Weapon - Knives! Knife throwing, knife combat, self-defence (Greek)
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