Robert Trussell has a problem with a Kansas City shakespeare festival’s casting. “Once again, the Heart of America Shakespeare Festival has assembled an all-white cast for its annual production, which this year is “Much Ado About Nothing.” The festival hasn’t indulged in monochrome casting every year, of course, but minority representation has been a troubling issue since the organization was founded in 1993. I have no doubt that I will hear from a few readers who see this as, well, much ado about nothing. I’ve heard all the arguments before. They usually go something like this: The actors at the Globe Theatre were white, so what’s the problem? There were no Asian, African or Hispanic actors in Shakespeare’s day, so why are you shoving diversity down our throats?”