I don’t think that’s true at all nor what they teach in numerous areas. Ymmv depending on your school district and how racist your rural school or suburbian city is though.

Regardless, your point of contention was literally with the First Thanksgiving mythos. It’s like saying the Christmas Day Soccer match in WW1 or whatever isn’t true because there was a war between every nation happening. Absolutely not. It’s one point of goodness which should absolutely be taught. Because humans do vastly more good than bad.

Humanity trudges on with or without the doomers every generation since even before Jesus the Apocalypticist.