LOL.
Stamping out the myth of "American exceptionalism" for future generations should be a very high educational priority.
Yes. Manifestations of German, Italian, and Japanese "exceptionalism" became so dangerous that other powers were obliged to obliterate them -- simultaneously.
All too often history is an obscene tale written in the blood of innocent people, and that is no exception with American history. The Atlantic slave trade, slavery itself, the Salem witch trials, the mass murder of First Peoples, Jim Crow, violent suppression of the right to organize labor, race riots, the Klan in its several incarnations, the internment of Japanese-Americans, McCarthy-era witch hunt, and the My Lai massacre all deserve mention in American history even if they are ugly. We forget those at the risk of their recurrence in perhaps bloodier and more inexcusable forms.