Perhaps this is an indirect result of the US providing military support to totalitarian regimes, but I don't see how it accounts for a rise in totalitarian/authoritarian tendencies in Russia, China, and other countries that don't receive such aid.
Nationalism and authoritarianism/totalitarianism tend to have more support when economic and other factors make people worried about their futures. In such situations, the natural human instinct is to crave stability at any cost, which opens the door for nationalism and authoritarianism/totalitarianism.