This is not a protest about taxes, because 95% of Americans (and probably 100% of the teabaggers) got a tax cut this year. This is not about spending or the size of the government, because there were no such protests when George W. Bush broke Clinton's balanced budget and put the government on steroids. This is not about freedom, because there are no rights being curtailed whatsoever.
The teabaggers are protesting losing Congress and the presidency to the Democrats. That's it.