If there is no relation between the act of "insanity" & the U.S. government's "errors," I don't think you can make a claim that "such acts of madness become the dominant driving force behind history as long as we do not admit to our own errors." Unless the "errors" in question are thought of as causes of "such acts of madness" in some sense, admitting to the "errors" won't do anything to prevent "acts of madness" from becoming "the driving force behind history."
BTW, who's going to do the "admitting"? The U.S. government? American citizens? And after the admission, what then?
Yoshie