I do not dislike Mexicans, or anyone else on this earth as a group, except perhaps the French, who are decadent Euro-weenies (but are soon to be a sharia state anyway).
However, in general I have learned, over many years, from a long series of unfortunate experiences, to
not automatically trust people from different cultures. Not to dislike them, because I tend to enjoy humans - but just to distrust them. I think this is an intelligent decision.
(By "culture", I refer to religion, ethnicity, national origin, upbringing, education, and everything else relevant to behavior and world-view - except skin color, which I ignore as irrelevant.)
Why? Not because they are bad, evil, or inferior, but because they are not on my page, and are thinking about things differently and seeing a different picture. Thus they have often let me down when I have the expectations of others that I am heir to. That displeases me. Since I am capable of learning from experience, I am also able to learn to trust some from other backgrounds, but it takes time - and it takes enough data points to draw a graph.
Trust is just as basic to relationships as is distrust. Both are worthy of respect and consideration. For me, trust is earned - never assumed. Learned that the hard way. It is the basis for natural, healthy "tribalism."
I have no time for multicultural understanding (especially if all of the understanding is one-way) unless I am having fun in the Grand Bazaar of Istanbul, and, neither being nor wanting to be an anthropologist, I do not care to try to understand how people from other cultures think. Nor do I feel any compelling desire to adjust. Just not all that interested, really, although I am willing to listen for a minute or two. Got enough to do as it is, like pruning my own trees and planting the peas and splitting firewood and reading a ton of history and being a grandpa and working 60 hrs/wk. Plus regular unpaid appearances on Maggie's Farm - where my rewards exceed my input, and where I am rewarded by self-education by some of my input.
I think I am fairly normal in this regard. Understanding people with my own cultural assumptions - my dear wife, for example, who is of an alien "gender' - is challenge enough for me.
However, in general I have learned, over many years, from a long series of unfortunate experiences, to not automatically trust people from different cultures. Not to dislike them, because I tend to enjoy humans - but just to distrust them. I think this is an intelligent decision.