I think I quite agree that individually labeling every single minority as "X-American" is doing more harm than good. It makes it impossible to label someone as simply American, which probably weakens our national heritage. I tend to just call people what they are; White, Hispanic, Black, Asian, and the like. Everyone in my country is an American (unless they're just visiting, I suppose).

However, I don't think I noticed parts in the article justifying or calling for segregation. The article specifically points out that the author of the study saying that it would be a bad thing.While acknowledging that racial and ethnic divisions may prove more stubborn,

Putnam argues that such examples bode well for the long-term prospects for social capital in a multiethnic America.

The only thing I found silly about the article is that it seems to frown upon other scientists being a bit upset that Putnam didn't simply present the facts about his paper.

Some critics have found his prescriptions underwhelming. And in offering ideas for mitigating his findings, Putnam has drawn scorn for stepping out of the role of dispassionate researcher. "You're just supposed to tell your peers what you found," says John Leo, senior fellow at the Manhattan Institute, a conservative think tank. "I don't expect academics to fret about these matters."

However, if I missed something regarding segregation, could you please point it out to me?