Anticolonialism has been one of the worst traps into which American foreign policy fell during this century. Naturally its stalwarts were and are the leftists. Yet the anticolonial sentiment is. quite generally represented in the American people and, in the United States, one has to be something of an esprit fort, an emancipated spirit, to be able to resist its temptation. The fact that anticolonialism has two distinct roots, and not just one, contributes powerfully to its strength. […]
There is, of course, nothing evil and nothing extraordinary about colonialism. It is the inevitable result of a historical law according to which not only nature, but also political geography, does not tolerate a vacuum. Where no effective resistance can be expected, other powers, other nations, other tribes will occupy, dominate, and administer an area. Our history could not be imagined without the forces of colonialism constantly at work. Without Greek colonialism Magna Graecia would not have existed, Stagira would not have existed (in a way Aristotle would not have existed), Paestum or Pergamum, Ephesus, or Agrigent would not delight us with their ruins. Without Phoenician colonialism, there would have been no Carthage-and eventually no St. Augustine. Roman colonialism (or “imperialism’ ‘) is responsible for the French language, for Racine and Moliere-and also for Cervantes, Lope de Vega, and Calderon. Without Bavarian colonialism there would be no Austrian people. And so forth. As we should all realize, there is good colonialism and bad colonialism, just as we have good rule, which is government conscious of the common good and the welfare of the citizen or subjects, and bad rule which is selfish and exercised solely for the profit of the rulers.
The twin roots of American anticolonialism are (a) insistence on self-rule (democracy), and (b) a misinterpretation and an illegitimate application of the reasons for American independence.
Erik Kuehnelt-Leddihn, Leftism: From de Sade and Marx to Hitler and Marcuse (1974)