Certainly not religious faith, for the last 40 years has seen a large influx of Muslims, the rise of a rabid secularism and the break-up of Christian churches -- the Episcopalians most recently -- over issues of morality: abortion, civil unions, homosexual bishops, assisted suicide, stem cell research, Darwin, creationism. No longer are we united by a common language, as the fastest growing radio and TV stations are Hispanic. And certainly not culture, as we are in a cultural war over history, heroes and holidays.
And how can we say diversity is a strength, when the most diverse nations of Europe, Yugoslavia and the Soviet Union, shattered into 22 nations as soon as they became free, and Slovaks and Czechs divorced? Ethnic and linguistic diversity is now pulling Belgium apart, as they tore Cyprus in two.
Since World War II, diversity -- racial, religious, ethnic, cultural -- has pulled Malaysia, the Indian subcontinent, Pakistan, Indonesia and Ethiopia apart, and is today pulling Iraq, Turkey and Lebanon apart. How, when tribalism is everywhere ascendant, is diversity a strength?
When Islam arose in the 7th century, our world became more diverse. Fourteen centuries of war followed. When Catholic Europe became more diverse with the Protestant Reformation, a century of war followed, ending in a Thirty Years War that carried away a third of all the German people.
There came a new diversity when the English came to the Red Man's continent in 1607 and Africans were brought as slaves in 1619. From that diversity came the near annihilation of American Indians and a racial divide that led to the American Civil War, bloodiest in the West in the 19th century.
Our racial diversity has ever been the most divisive issue in America -- and remains so, as we see daily from Jena, the Imus affair and the Duke rape case.
Britain is more diverse than in the time of Victoria and Churchill. Is Britain a better, stronger nation now that London is Londonistan, madrassas defend the London bombers and race riots are common in the industrial north? If diversity is a strength, why do Scots wish to follow the Irish and secede?
Has Germany been strengthened by the diversity the Turks brought? Is France a stronger nation for the 5 million to 8 million Muslims concentrated in the banlieus? How have the Japanese suffered from their lack of diversity?
The Melting Pot -- language, law, culture -- worked to make us one nation and one people. But that Melting Pot, cracked and broken, is rejected by multiculturalists as an instrument of cultural genocide, crafted by white Europeans to annihilate native cultures.
This generation is witnessing the Deconstruction of America. Out of one, many.