There can never be such a thing as a free market, because it is human nature to cheat, monopolize, and buy off others so as to corner the market.
Yet, while producing increasingly selfish people, the mantra of the Left, and therefore of the universities and the media, has been for generations that capitalism and the free market, not the welfare state, produces selfish people.
A dollar vigilante is a free market individual who protests the government monopoly and financial policies, such as fractional reserve banking and unbacked fiat currencies, by selling those same fiat currencies in favor of other assets, including gold and precious metals.