Thank you very much for your thoughtful response.

I must admit, though, to not seeing the "structure" of the racism here. If the proximal cause of a problem like leaded water is poverty, not race, then even though racial minorities make up a disproportionate number of the poor there's no racism.

If the problem doesn't gain sufficient public awareness because it mostly affects racial minorities then that's racist, but it's personal, not structural.

If the problem is simply 𝗱𝗲𝗳𝗶𝗻𝗲𝗱 as racist because it has a racially-weighted 𝗿𝗲𝘀𝘂𝗹𝘁, well, I don't consider that a racist structure either. By that definition sunburn is a racist structure.