And "multiculturalism" the second.
The thing that made the U.S. unique and strong is the influx of eager immigrants from all over the world who came here to become Americans. To assimilate.
Hyphenated Americans was the first clue that something was amiss. We ignored it. We continue ignoring it at the cost of our very existence as a free and unique country.
Multiculturalism was the visible manifestation of the infamous "rope" that we sold the forces of evil with which they are now in the process of hanging us.