Not sure if anyone said this (too many posts to sort through), but Roger Williams would be a good safety. I spent some time up there and OMG so many white people. Coming from HI (where, though I am also NA I was considered white) I didn't realize that many white people existed in one place.
FWIW, I can see someone's need to stay w/i your ethnic group (w/o making any comment on whether or not that's the healiest way to approach something). I have several black friends who went to majority black undergads cause that's were they were more comfortable/wanted to experience being in the majority and pretty much all the Asian kids at my school stayed in Hawaii/CA for ug at schools with low numbers of non-Asians (UH is something like 70% Asian/Pacific Islander) b/c they didn't want to be the "minority" at a school.
It was an interesting experience for me to go from being one of 3 white kids in a school to picking the undergrad I did that was like 70-80% white. Given that I've had that experience, it didn't really influence my law school choice, but given the number of AA friends I have who sought out historically black ls's, etc. I think it makes sens cme white students may want to do that same thing.