The problem of dialog with a tribal mindset is that the loudest tribes drown out the rest - what was that you were saying, Jason?
Much like people elsewhere, many Americans do not know that ethnicity and race are different things, and there seems to be some confusion still even about nationality and geography too. It is also easiest to just listen to the loudest or the nearest, especially when the topic is a bit outside of someone’s frame of reference or experience. Americans are figuring it out though. It is just taking a lot longer than anyone would like.
Turning an insensitivity into a teachable moment also builds understanding. We all need to be teachers if we are going to understand each other. I encourage you to keep on writing about it.