And by the way, it really is disproportionately middle class white boys. It's almost hilarious how true that statement is.
Not really. During my time in high school, I've met one(1) racist white kid. It was during my freshman year while attending a >90% white high school. He was racist against me cause I'm Puerto Rican(I'm not even that dark, tho, but whatever). He was saying **** like "Puerto Ricans are savages" (before the term savage was a cool thing) "They're so poor they eat rats and ****." I ended up kicking his ass, I felt so proud; but here's the thing, even tho he was the only white racist I met in school, he never "justified" it. As a matter of a fact, he later apologized to me and admitted he was wrong.
Next year, I went to a really ghetto school in Cleveland. The word nigga was dropped at least 100 times a day in that school. Not by whites, but by blacks and hispanics. In this school, whites were the minority, a rough estimate would be somewhere around 30%. Teachers didn't question it, other students didn't question it. It was "justified." By my experience, minorities have FAR surpassed whites in their racial slur justification.