The left has been suspicious of private property since Pierre-Joseph Proudhon brazenly declared it to be nothing more than theft in 1840. His friend, Karl Marx, saw it as the root of capitalism’s exploitation, a superfluous invention of the bourgeoisie that would be dispensed with in the future. Anarchists’ generally see it as an agent of control. Even the most sympathetic socialists treat private property as a necessary evil. Those on the left who refuse to denounce private property are all-too-quickly labeled as faux-socialists, unwitting capitalist apologists, or even disingenuous counter-revolutionary agents.