The laughable irony is that prior to Trump telling them that free trade is bad, most of the right-wingers strongly supported free trade, because their leaders at the time told them it was a good thing. Sheep will be sheep, but this turnabout shows clearly, that these people can be manipulated to believe anything, even if it's the exact opposite of what they were told to believe a short time ago. 
It's one reason of many why I can unequivocally say, that these people lack both basic intelligence and integrity.