Any other (new or not) contradictions?
The biggest inconsistency is that Democrats seem incapable of understanding the relationship between the public and private sector. The public sector is supposed to accomplish the existential tasks of promoting general welfare, insuring domestic tranquility, and provide for the common defense. Meanwhile, private corporations are designed almost exclusively to maximize profit and increase material resources.
Naturally, Democrats try to dump all of the existential social work on corporate America with counterproductive min wage laws, unemployment insurance taxes, employer healthcare mandates, pension laws, defense cuts (employment instability), etc etc. Then Democrats embark on a foolhardy strategy to command the economy with new spending programs and money supply mismanagement, most of which mimic deadweight economic loss because they do nothing for workers.
But for a brief moment in time, when Hoover was asleep at the switch, Democrats have been perpetually dazed and confused. They don't have anything to offer, unless you like divisive cultural warfare.