You walking back the obvious implications of your anecdote makes it even worse. Now it's not even some wider Chinese cultural trait linking the students and the

You walking back the obvious implications of your anecdote makes it even worse. Now it's not even some wider Chinese cultural trait linking the students and the executive, just their ethnicity. Stop digging. Nobody is asking you to pretend your experiences didn't happen. However, people usually only include details in a story if they are relevant. Here, you're including (and emphasizing, by virtue of where you posted the story) the detail that the students are Chinese, which by implication is relevant to your story. It's fine to have these sorts of biases against other ethnicities early in your life. I did. Honestly, it would be a miracle if you didn't, because overwhelming messaging in media and society (by stories such as yours) tells us these biases are justified and important. Nobody is born with fully-developed political opinions. Just take this opportunity to recognize a bias in yourself and move beyond it.