They can't ever have any evidence around about how insane their policies were, because it discredits their religion of socialism.
They’ll hide any evidence that they think is crazy but in my experience liberals do not think their views are crazy, e.g., rewarding unmarried pregnant women with $$ and then wondering why there is a huge increase; paying people unemployment and wondering why many don’t look for a job; giving welfare and medical care to illegals. They simply do not understand cause and effect.