First: Using work email accounts or sharing this kind of crap among your colleagues makes you an idiot. You should be fired for that alone.
Second: The last email in the chain includes a bizarre rant that outs the writer as a wildly uneducated racist. Not to mention mentally unstable (a racist rant in response to a request for an American Idol seat upgrade???) Perhaps it's time the US Government reanalyzes it's personality testing pre-hire.
Lastly: These people are very often paid to protect the very kind of people they seem to have a great deal of contempt for. They should be fired, if for no more reason than their ability to do their job properly is in question. It is unfortunate we can do nothing about their ignorance and hatefulness--that is usually taught at an early age by parents...