good article the only thing I beg to differ on is his comment that most Mexicans are descended from Spanish Colonialists. That is not all together true. Most Mexicans are Mestizo, both Indian and Spanish and maybe even some African.
Pure Indian is about 10% of the population, Caucasian is about 15%, Mestizo is about 70%.
In America, the Indian was either killed or put on a reservation.
The Spanish either killed them or made babies with them :)