There has always been a conflict between two types of economic mentality: free-market vs. command economy. It is actually the reflection of two broader mind-sets in economic reality: moderate-democrat mentality vs. radical-autocratic mentality. Free market system requires individual decision-making, free trade, no government intervention. Command economy system requires collective decision-making, protectionism and heavy government intervention. Recent trade wars launched by the US Administration against China and other countries is nothing but the latest effort revive the mercantilist, protectionist, anti-free trade and open borders mentality. But protectionism brings high costs, lower supply, higher prices, lower welfare, and fewer alternatives for individuals.