The Zumbo and Imus cases cannot be compared. Zumbo expressed an opinion about particular firearms and was fired by his sponsors for it. Imus crossed the line of common decency and was fired by his sponsors for it. I believe Sharpton and Jackson are activist preacher politician celebrities. They'd be fired too if they made racist remarks as media persons living at the whim of sponsors. Because the language of public discourse daily becomes more disgusting.