I see. And if I point out that the KKK is all white dudes, then I'm also being racist? What a meanie I am!

Pointing out the unbalanced composition of a group meant to solve society's problems is not in any way racist. It's a specific application of the general rule that humans have hard time understanding the experiences of people different than themselves, especially when there's privilege involved.

Unlike the kkk, there is no indication the OP chose the three men on account of their race. To therefore attack them on the basis of their race is an ad hominem racial assault. Furthermore, obviously the three are privileged compared to a kid born in, say, Ethiopia, but I don't see how that illegitimates them for a discussion on America.

It doesn't mean they can't participate in the discussion. It does mean that if they're the only people in the discussion, there's probably going to be some things wrong with the outcome.

That's the silliest statement I've read all day.