And we do it in the U.S. through classism too though it’s much less apparent (mostly because Americans like to believe in ‘upward mobility’).
How you talk, what you eat, what kind of music you like. All of this can betray caste (or class) and keep you out of job positions or even schools if the person interviewing you has conscious or subconscious biases.
The rich have a term, new money, which is a way of saying, you don’t belong in our caste. Or class. Pick your term for bigotry.