I find Barack Obama a little too slick and, yes, arrogant to like. But the picture, posted at Lucianne.com today, of him listenting intently to the bloviations of the Reverend Jackson — even though it is a pure example of political theater and Obama is a pretty good actor — caused a passing twinge of pity for all the sucking up any politician has to do just to function, day to day. Still, it isn’t like being on a road crew in the heat, or lifting boxes…