[taejo]

> white male vs. black male or white female vs. black female

These are still groups. I (a male) am much less likely to mug anyone (let's say 1 in a million chance this year) than certain individual women. Within the group of men and within the group of women, the "mugging probability" varies from almost zero to almost one.

[iopq]

I have no way of knowing YOUR percentage when I see you in a dark alley. It's safer to just run and have you be offended at me.