Jr. is not the first young man to think he's untouchable only to have to deal with failure. It is part of growing up; a part I didn't like at the time but now realize was the best thing for me. Hopefully he figures out that his biggest problems are internal and grows as a fighter and a man.
Chavez has indigenous blood, but even so, race goes beyond phenotype. Argentines are considered to be more European, and so to racists, of a classier culture. Regardless, that was no knockdown and no example of racism.