America's Racial and Ethnic Divides a Jew from England named Israel Zangwill penned a play whose story line has long been forgotten, but whose central theme has not. His production was entitled "The Melting Pot" and its message still holds a tremendous power on the national imagination – the promise that all immigrants can be transformed into Americans, a new alloy forged in a crucible of democracy, freedom and civic responsibility. the United States was in the middle of absorbing the largest influx of immigrants in its history – Irish and Germans, followed by Italians and East Europeans, Catholics and Jews – some 18 million new citizens between 1890 and 1920. Today, the United States is experiencing its second great wave of immigration, a movement of people that has profound implications for a society that by tradition pays homage to its immigrant roots at the same time it confronts complex and deeply ingrained ethnic and racial divisions. The immigrants of today come not from Europe but overwhelmingly from the still developing world of Asia and Latin America. The are driving a demographic shift so rapid that within the lifetimes of today's teenagers, no one ethnic group – including whites of European descent – will comprise a majority of the nation's population. This shift, according to social historians, demographers and others studying the trends, will severely test the premise of the fabled melting pot, the idea, so central to national identity, that this country can transform people of every color and background into "one America." Just as possible, they say, is that the nation will continue to fracture into many separate, disconnected communities with no shared sense of commonality or purpose. Or perhaps it will evolve into something in between, a pluralistic society that will hold on to some core ideas about citizenship and capitalism, but with little meaningful interaction among groups. The demo...