(CNN) -- Here's proof that President Obama has indeed ushered in a new era in race relations.
Who would have ever expected some white Americans to demand that an African-American man show more rage?
If you've followed the Gulf of Mexico oil disaster, you've heard the complaints that Obama isn't showing enough emotion.
But scholars say Obama's critics ignore a lesson from American history: Many white Americans don't like angry black men.
It's the lesson Obama absorbed from his upbringing, and from an impromptu remark he delivered last summer. Yet it's a lesson he may now have to jettison, they say, as public outrage spreads.
"Folks are waiting for a Samuel Jackson 'Snakes on the Plane' moment from this president as in: 'We gotta' get this $#@!!* oil back in the $#!!* rig!' But that's just not who Obama is,'' says Saladin Ambar, a political science professor at Lehigh University in Bethlehem, Pennsylvania.
Some of the same people crying for Obama to show more emotion would have voted against him if he had displayed anger during his presidential run, says William Jelani Cobb, author of "The Substance of Hope: Barack Obama and the Paradox of Progress."
"It would have fed deeply into a pre-existing set of narratives about the angry black man," Cobb says. "The anger would have gotten in the way. He would have frightened off white voters who were interested in him because he seemed to be like the black guy they worked with or went to graduate school with -- not a black guy who is threatening."
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