Long before Charles Koch became the left's public enemy number one (or two, depending on where David Koch falls in the rankings), some of his most vocal detractors were not liberals but fellow libertarians. None of his erstwhile allies would come to loathe him more fiercely than Murray Rothbard, one of the movement's intellectual forefathers, with whom Charles had worked closely to elevate libertarianism from a fringy cadre of radical thinkers to a genuine and growing mass movement.
In the 1970s, Charles helped fund Rothbard's work, as the economist churned out treatise after treatise denouncing the tyranny of government. Rothbard was a man with a plan when it came to movement-building. Where some libertarians had bickered over whether to advance the cause through an academic or an activist approach, Rothbard argued that the solution wasn't to choose one path, but both. Charles was taken with his strategic vision. Rothbard dreamt of creating a libertarian think tank to bolster the movement's intellectual capacity. Charles Koch made this a reality in 1977, when he co-founded the Cato Institute with Rothbard and Ed Crane, then the chairman of the national Libertarian Party. This was a high point for libertarianism, when a busy hive of libertarian organizing buzzed on San Francisco's Montgomery Street, home to Cato and a handful of other ideological operations bankrolled by Charles Koch.
But the relationship between Cato's co-founders soon soured.