I have edited my post to not single you out and make any assumptions about you.
however it does seem so far on this thread that you must at least lean toward the idea they are mostly racists. why else would you be attacking a small attempt at providing some actual evidence like you are? You certainly seem to be siding with those who do make those claims right now.
The Tea Party started out as a Ron Paul inspired Libertarian movement. After Obama took office, they quickly became a Conservative base of the GOP pandering movement. They have nominated typical Republicans (Rand Paul), extreme far right candidates (Christine O'Donnell, Sharron Angle), and morons (Joe Miller). They are what you would expect of the base of any political ideology.
I don't know for sure whether they are a majority racist or bigoted but I know a great number are. I would put that number at least 30%. Others are merely ignorant of what is actually going on. Some actually want smaller government, but are nominating candidates who aren't going to get it or want to get it.
It has been co-opted at this point by the GOP. I also happen to think that the mindset of many members which is politics based on fear and anger is counterproductive to what should be the aim in politics. Politics based on fear and anger is toxic to also actually getting anything done.