Hillary Clinton's campaign is not exactly the same thing as Hillary Clinton. The woman herself is a paragon of the establishment, a fixture of the last quarter century of American politics, an insider, familiar both as a political personality and as an experienced purveyor of political goods and services.
The campaign is that and something more.
The election of 2008 is viewed as an American watershed, the year the emerging majority of nonwhites first elected one of its own to the presidency. That's basically true. But the context matters. The incumbent party had made such a mess of things that the out-group, led by the most out-candidate in American history, suddenly had an inside track, aided by a financial collapse perfectly timed to benefit the outsider.
It could have been a fluke. David Dinkins was elected the first black mayor of New York City in 1989. But Dinkins's tenure was widely perceived as a failure. He lost his bid for re-election. New York, unlike the U.S., already has a nonwhite majority. Yet it hasn't elected a nonwhite mayor since Dinkins -- a hiatus of 27 years and counting.