I was bullied mercilessly in the seventh grade by a group of eighth grade girls that all happened to be black. Racial slurs were thrown my way every day, food was thrown at me in the cafeteria every day, I was pushed into lockers, people got in my face and threatened to beat my head in. It was 100% unprovoked. I had to eat lunch with the eighth graders that year and was told that I allegedly 'stared' at someone one day, which apparently set the whole thing off. One girl did apologize to me at the end of the school year, telling me she knew they were all wrong. However, going to school that year was hell. I was afraid to go. Administrators did nothing (one even watched them do their usual thing toward me and still did nothing).
Do not think white people never experience this type of thing. It does happen. Bullying is a big problem in schools and it happens to a lot of people of many races and ethnicities for a variety of reasons.