My male friend got fired (rightfully) last year for discrimination. He was mocking a Mexican lady with someone else and saying specific terms.
He assumed she was another Mexican that lived in the US for years and can't speak any English. The lady has only been a legal resident for 4 years so he really thought she didn't understand anything.
He had a surprised pikachu face when she reported him, had secretly recorded it and proceeded to do it in English without any translator. He got fired quickly. Are you surprised when some Mexicans immigrants catch up and actually learn English?