Americans are a people of mixed races. Race is not a dirty word it's simply used to identify a given group of people. If you understand the term racist then that implies you understand the word race.
"Sorry but I don’t buy it."
No one is trying to pull a fast one, this is simply dealing with the definition of a word.
I hear ya. I just disagree.
“race: 2 a : the descendants of a common ancestor : a family, tribe, people, or nation belonging to the same stock -Websters”
That does not describe Mexicans or Americans, who encompass a mix of all races coming from various families, tribes, people and nations.