Paul Krugman: It’s a Different Country

Fervent supporters of Barack Obama like to say that putting him in the White House would transform America. With all due respect to the candidate, that gets it backward. Mr. Obama is an impressive speaker who has run a brilliant campaign — but if he wins in November, it will be because our country has already been transformed.

Mr. Obama’s nomination wouldn’t have been possible 20 years ago. It’s possible today only because racial division, which has driven U.S. politics rightward for more than four decades, has lost much of its sting.