Actually, I'd say that the Soviet Union's collapse was better proof that socialism doesn't work in practice.

I look forward to the downvotes and the replies on how I'm wrong.

I'll buy most of that. I want to add that the U.S. is not a Purely capitalistic society since around the time we ended slavery. Every way of life is an experiment about adding the right proportions of things. Capitalism seems a good starting point but it can be improved upon. FDR's New Deal was a successful implementation of an appropriate dosage of socialism after capitalism caused a global depression. I think we need a new FDR and not a new Lenin.