"There are no libertarians in a global pandemic." So goes the smug punchline of large-government advocates who point to the necessity of collective action in the face of an unprecedented global crisis. Without government, they say, we'd all be dead. Few libertarians would disagree. The hardcore libertarians at Reason magazine aren't spending their days fulminating over the evils of government-required lockdown orders in the face of a fast-spreading, deadly disease. That's because they, like all other sentient human beings, recognize that collective action is sometimes...