That which is ignorant or untrue and we know it to be ignorant or untrue doesn't matter! One always has to weigh what one hears and judge whether it is true and helpful or not true or not helpful, etc. The lady was so far off the mark about what "Mexican" might mean (especially to anyone of that heritage) that it is obviously spewed filth, not truth or enlightenment or something anyone ever wants to use for themselves. One can't change the woman's point of view; she hates "Mexicans" but one can see she is horribly ignorant about what "Mexican" is and has had a bad experience and painted all in a group as if that were all there were to the group. The lady is entitled to her opinion, she just cannot express it, loudly, around me. I do not think the clerk would get fired for getting security to "help" the woman out of the store, only for being as verbally rude to her as she was to him. No one has to put up with verbal abuse in their job; it gets passed to a supervisor or one calls security; it's harassment and that's against the law.