From the first page, “Similarly, in Mexico, — often taken to mean “solidarity” or “resistance” elsewhere — is actually closer to giving someone the middle fin

From the first page, “Similarly, in Mexico, — often taken to mean “solidarity” or “resistance” elsewhere — is actually closer to giving someone the middle finger in the U.S. (Technically, it bids the receiver to do something unconscionable to their own mother.)” I have never heard of being offensive, nor would I have considered it such receiving it. Has anyone else found this to be true?