Curiosamente, hasta en la misma Wikipedia inglesa se admite que, mientras la mayoría de muertes de los indígenas en época española y mexicana se debió a epidemias, bajo dominio yanki la mitad de estas se debieron a la limpieza étnica, ni más ni menos:

The pre-contact population of California (225,000) had been reduced by 33 percent during Spanish and Mexican rule, but that was caused mostly by epidemics. Under American rule (from 1848 on), when most of the twenty-one missions were in ruins, the loss of indigenous lives was catastrophic—80 percent died, leaving just 30,000 in 1870. And nearly half of those losses were due not to disease, but to murder.[13]

https://en.m.wikipedia.org/wiki/Cali...res#Population

Saludos en Xto.