Despite what's happening in Palestine, the Jews have been, historically, one of the most persecuted peoples (especially in Europe -- indeed they were the first targets of the Inquisition in Spain). I don't know if Sanchez can be described as having a "persecution complex" in the face of very real and ongoing discrimination and marginalization of "Hispanics" in this country (observe the Arizona law empowering police to check immigration status of crimes involving Hispanic people, and in that same state "ethnic" studies have been banned, I understand).
I think it is never helpful for marginalized people to engage in martyr competitions between themselves. That anger should be focused on the system itself that creates those divisions, which divides and conquers.
As a hubber called Paraglider said in a slightly different context, this inter-group snipping among non-white peoples of color and other non-Anglo-Saxon ethnic groups, and the lower classes (in some cases, castes), only provides "spectacle for the controllers."
Did Sanchez deserve to be fired? If I were the powers-that-be I probably wouldn't have gone that far. I might have had him disciplined, perhaps suspended for a couple of weeks with pay.