Murder is forever. Period. Dead is a long time. That a death is done violently by a punk kid terrorist with an agenda is not wiped out by an administrative mistake. That a punk kid terrorist can walk away from justice, because of his capitalist daddy's money, does not make him innocent. It just makes him a free terrorist murderer who slipped through the cracks of justice. But the dead remain so. Their family reaps the fruit of injustice while the murderer reaps the fruit of a world in which he becomes an educational expert. Ahem, respected.
Plumbing isn't forever which is why we always need more of them to remove waste from our homes and lives. Sam, who goes by his middle name Joe, is a symbol of the American dream in which people succeed when they work hard. Joe has come under attack for allowing Obama to answer his question with feel good socialist goobly gook. Obama supporters point out his name isn't Joe, he doesn't have a plumber's license and will get a tax cut under Obama. Joe is Joe. Joe doesn't require a plumber's license. Joe doesn't need Obama's tax cut. Joe needs government out of his way so he can service his fellow citizens and make a profit. If Joe dreams of making more than the contrived class warfare income level of $250,000 then Joe is dreaming of being successful which means he dreams of creating new jobs. Those dreams will be snatched away from all the Joe's if Obama creates the worker paradise that he is just now hinting he will foist on America.
So, yes, Bill the Bomber does represent liberal/socialist ideology and Joe the Plumber represents America.