Just to be clear, by brownface, do you mean a white actor playing a hispanic/mexican character? Just asking, cause I get irked when a white actor plays an Indian.
Wallach is ineligible to be named in this thread because he was born in NYC from Jewish parents who had emigrated from Poland.
Being Jewish has nothing at all to do with whether or not Eli Wallach could play a Mexican bandit.
What are the best Westerns that feature a "Mexican/Mexican-American"..