You don't have to be a communist to argue that the US is not a democracy. I bet if woozy were in this thread he'd be talking about how the founders hated democracy because it is tyranny of the majority and that the US is a constitutional republic. John Adams said that democracy is 2 wolves and a sheep voting on what to have for dinner.
Besides, communist is a label thrown around way too often. Next time you consider using the word ask yourself, does this have anything to do with revolutionary socialism aimed at creating a classless, moneyless and stateless society with common ownership of all means of production? It probably doesn't.