Micro Aggression

I remember very long ago in elementary school my school was for some reason very segregated. My class was obviously mainly white kids while the other class was only latino and black kids. But during recess we would still all play each other, and I wasn't friends with too many kids in the other class other than another kid named Anthony. We were the only two kids with kind of the same name, though everyone still called me Anthony. The micro aggression I witnessed was when my other friends decided to call me Anthony 1, and him Anthony 2 and when I asked why it was only because he was latino. I guess it's kind of a small, but I don't remember ever feeling right about it and I haven't thought about it in a long time.