> We didn't "intervene" until the germans declare war on us.

Yes, that was mistake and the lesson that should be learned.

> The genocidal civilization was Spain, not the aztecs.

This is complete revisionism, Spain laid war on the Aztecs supported even by other indians, it wasn't a voluntary biological warfare. The Aztecs killed tens of thousands of people per year.

> Who is we? Who destroyed half of europe to stop germany?

The allies. Are Allied bombings considered a contentious subject now?

> Did we wipe out the germans? Did we wipe out the german language, culture, history, etc?

Spaniards did not "wipe out" indian people, the Aztec civilization went the way of every conquered civilization. Did Arabs wipe out Egyptian language, culture, history, etc or did it dwindle in importance over the centuries as a new civilization took over the other?