...America? Are we not corrupt?
No need to inject race into the discussion -- you played that race card almost as fast as Sharpton or Jackson would have. :)
I'm not sure I agree with the South Africa boycott either. I'm not really inspired by the idea of punishing everyone in a nation for their government's corruption. Smacks of the same spirit as sanctions do. Wouldn't it be more powerful to perform in Israel (or, in the past, in South Africa) and express your point of view in a positive manner? Engage the culture instead of shun it.