I used to drive a taxi many years ago, doing school deseg runs, transporting niglets from their area into white schools 30 miles away.
Once, one the the niglets found a fly buzzing around in the back seat, and smashed it, shouting in triumph, "I killed the nigga!"
The blacks I saw were always calling each other nigga this and nigga that.
I live in a neighborhood that prolly 50% black, 40%white, and 10%mexican. It's prolly more white than my guess, as we tend not to hang out on tha corna quite so much.