Freedom and capitalism account for human nature's base proclivities and channels them productively. In contrast, totalitarianism attempts to suppress man's base nature--except, of course, the supreme leader and his oligarchy. They are free to express all aspects of themselves. Totalitarian fantasies abound among those who are convinced that their way would be best for everyone--if only everyone would submit to their betters.
Dr. Sanity has the best essay on the genesis of totalitarianism. She finds a seed being sown in Seattle by public school teachers removing Legos from the classroom. Here's just a tidbit:
Human nature is what it is. This is not at all tragic; it is a simple truth. The biological fantasies of the leftist utopians; and the delusional fantasies of communists and socialists and all their 21st century heirs, have lead to incalculable levels of human suffering all over the world, as the proponents of these theories have tried to force humans to evolve into some sort of "ideal" state.
All such systems have failed the real-world tests in the last century; and all current versions of these ideologies will also eventually fail and fade away. To the extent that they attempt to incorporate some aspects of "human nature" into their failing system, they may last a bit longer as they slowly chip away at the human spirit and work to extinguish it; but it is actually much more likely that human nature will transform the perverse ideology than that the reverse will happen.