More like he lacks knowledge of concentration camps. That one was liberated by Soviets.

Obama's uncle helped liberate one of the subcamps at Buchenwald. He goofed on the name, but the action is not a lie.

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"I hope we shall crush in its birth the aristocracy of our monied corporations which dare already to challenge our government to a trial by strength, and bid defiance to the laws of our country."
- Thomas Jefferson