The mere notion that all 350 million of us need to "get over our differences" & "get along" is nonsensical.
One of our fundamental differences is that people in the one group—the group which gets to define "American" identity—are not willing to exist on an equal footing with people who are not the primary beneficiaries of white-supremacist colonialism.
What the fuck is the point of talking like we all have a cultural identity in common other than to further that white-supremacist agenda?