The lesson of Rand Paul: libertarianism is juvenile...
Because never, and I mean never, has there been capitalist enterprise that wasn't ultimately underwritten by the state. This is true at an obvious level that even most libertarians would concede (though maybe not some of the Austrian economists whom Rand Paul adores): for the system to work, you need some kind of bare bones apparatus for enforcing contracts and protecting property. But it's also true in a more profound, historical sense. To summarize very briefly a long and complicated process, we got capitalism in the first place through a long process of flirtation between governments on the one hand, and bankers and merchants on the other, culminating in the Industrial Revolution. What libertarians revere as an eternal, holy truth is in fact, in the grand scheme of human history, quite young. And if they'd just stop worshiping for a minute, they'd notice the parents hovering in the background. Libertarians like Paul are walking around with the idea that the world could just snap back to a naturally-occurring benign order if the government stopped interfering. As Paul implied, good people wouldn't shop at the racist stores, so there wouldn't be any.