As I mentioned, you clearly have not read Obama's books. He was in Indonesia parts of ages 6-10. The majority of his youth was spent in Hawaii...a place with a lot of tension over who qualifies as local, and otherwise ethnic admixtures. If you think the only tensions across racial and ethnic lines in this country are black/white, you are not paying attention.
The main reason there is an obsession with racism in America is that the historic black experience entailed being mistreated, particularly with slavery and segregation. That is not the only facet of racial tensions, as you point out, but it is by far the most significant. Japanese Americans were locked up in internment camps during World War II and Chinese people were explicitly banned from entering America for decades. Yet, hardly anyone talks about these things.
And the black experience has very little to do with the peculiar situation in Hawaii. If Obama simply spoke to the situation in Hawaii, I would not care. But when he says that Trayvon Martin could have been his son or that he was profiled growing up, then he starts pretending to have suffered in ways that he didn't. That was Carson's point.
