There are card-carrying leftists in the United States. Nowhere near as many as you think, but they exist.
The conflict is between people smart enough to recognize a snake-oil salesman with his hand in their pocket, and people who are not.
Leftists are a small percentage of this group. The fact is, many conservative Republicans loathe and mistrust this man, but are trapped by people like you who think they are warriors in cultural armageddon. The people feeding you the "third world/banana republic" one-liners are paid to do so. They are also feeding you the "which side are you on" bulls#!t. It would be funny if it wasn't so frightening.
It's not to late to save your soul, NDJ.