Scolding Americans for our various sins is proving popular among an elite group of self-appointed moralists.

Take well-meaning environmentalists who warn us that our plush lifestyles heat up and pollute the planet. To listen to former Vice President Al Gore or New York Times columnist Thomas Friedman, we must immediately curtail our carbon emissions — or face planetary destruction.

Yet these influential prophets of doom do not have lives remotely similar to the lesser folk they lecture to. From time to time, Al Gore hops on a private jet — and purchases "carbon offsets" penances for the privilege. His mansion not long ago consumed more energy in a month than the average American home does in a year. Friedman lives on a sprawling estate reminiscent of the grandees of the English countryside.

Elite critics in the business of racial grievance offer the same contradictions.

Recently, Harvard professor Henry Louis Gates got into a spat with a white policeman who arrested him in his own home for disorderly conduct. Gates immediately cried racism. He argued that his own plight was emblematic of the burdens that the black underclass endures daily from a racist white America.

But Gates is one of the highest paid humanities professors in the United States. And Gates — not the middle-class Cambridge, Mass., white cop — engaged in shouting and brought up race. Within hours, the African-American mayor of Cambridge, the African-American governor of Massachusetts, and the African-American president of the United States, all rallied to their chum's side.

Yet this well-connected, well-paid Harvard resident apparently wants us to believe in melodramatic fashion that he is living under something like the United States of decades ago. Indeed, citing racial grievance at times proves a valuable asset for wealthy celebrities. Michael Jackson and O.J. Simpson posed as victims of various racial oppressions when they found themselves in their own self-created legal problems. Race-baiter Rev. Jeremiah Wright simply retreats back to his mansion on a golf course in between his day job of denouncing whites as exploiters.

Then we have other aristocrats on the barricades railing about the economic inequality of America. Former Sen. John Edwards preached about "two Americas," one poor and abandoned, one wealthy and connected. Edwards should know since he built himself a multimillion-dollar gargantuan mansion in which he might better contemplate upon the underprivileged.

In the old days, critics for the most part of what we called the "system" were at least blue-collar workers, underpaid teachers or grassroots politicians whose rather modest lives matched their angry populist rhetoric. Now the most vehement critics of America's purported sins are among the upper classes. And their parlor game has confused Americans about why they are being called polluters, racists and exploiters by those who have fared the best in America.

Do the wealthy and the powerful lecture us about our wrongs because they know their own insider status ensures that they are exempt from the harsh medicine they advocate for others? Millionaire Gore is not much affected by higher taxes for his cap-and-trade crusade.

Or does the hypocrisy grow out of a sort of class snobbery? Do elites hector the crass middle class because it lacks their own taste, rare insight and privileged style? Judging from the report, Gates seemed flabbergasted that the white Cambridge cop did not know who he was "messing" with.

Or is the new hypocrisy an eerie sort of psychological compensation at work? Perhaps the more Al Gore rails about carbon emissions, the more he can without guilt enjoy what emits them. The more professor Gates can cite racism, the more he himself is paid to spot it. And the more a Tom Daschle wants to tax and spend for health care, the less badly he feels about his own chauffer and tax avoidance?

Here's a little advice for all of America's aristocratic critics: a little less hypocrisy, a little more appreciation of your good lives — and then maybe the rest of us will listen to you a little more.