Now I have to repeat myself. :roll:
It is becaue I love human behavior. What people don't say often says a lot more about them than what they do say. And the fact is, there is something that neither you nor Rev will say. You won't say why the tea party is commposed mostly of white people. Instead of saying why, you choose to argue that it is irrelevant or you get incredibly defensive and argue that anyone who would even mention race is a racist or hypocrite. That says an awful lot about you even though you aren't even aware that you are communicating. It says that it bothers you and you would rather avoid it entirely than think about it.
The Tea Party is a majoritly white group for likely a number of reasons.
The first of which is that whites make up the largest segment of the population and generally speaking national groups that do not specifically cater to an individual minority will tend to have more whites than any other singular minority.
The second is that minorities, blacks in particular, tend to be more liberal in their political ideology and as such are going to be less likely to take part in a conservative movement. The same goes for Latino's when it comes to non-social issues. This in and of itself makes up the two largest minority demographics in the country. So the base of those minorities that the Tea Party would be likely to gain membership from is already smaller percentage wise than that of Whites as there a higher percentage of those minorites identify liberla than conservative then whites do.
Thirdly, in addition with the above, whites in general are less likely to be recieving things like Welfare which is the type of big government program that is presented as something the Tea Party doesn't like. Roughly 1 in every 17 white people are on welfare compared to 1 in every 4 for blacks and 1 in every 5 for hispanics. So your base of people likely to be attracted to the Tea Party reduces itself at 3 times the rate from the Hispanic and Black communities then it does from the white community.
Fourthly, coverage. The Tea Party came into prominence opposite of the time where arguably the most popular President with minorites came into power, and came into prominence largely against his policies. It was covered almost from the start with an air of racism, and by "start" I mean its Ron Paul supporting roots. As it became larger in prominence the implication, or direct accusation, of racism grew. Message feeds upon message and acts as a deterent for some of those minorites that would've potentially been on the fence from actually taking the leap.
So in summary I would say the likeliest reasons the tea party is largely made up of white individuals is because:
1) They are the largest population in the, more than double all other minorities combined.
2) The two largest minorities groups lean liberal on fiscal and governmental issues shrinking the base of appeal
3) A higher percentage of minorities engage in the types of programs the Tea Party is depicted at being against
4) The Tea Party has been implied or flat out called racist from its inception which potentially deters on the fence minorities