I honestly don't know these boys, but I can honestly see this as not involving any form of hatred. I've been to a fair amount of small towns, and they really don't have any kind of conception of what these words actually mean to people. They certainly understand that it's hurtful, but I think it is closer to curse words (i.e. "taboo" and "edgy") than an actual intent to cause harm to someone.

If you see it from that perspective, I think it's unfair to hold these boys accountable for it for the rest of their lives. It's a dumb move, but they'll hopefully get some exposure to POC and change their ways. I would honestly be pretty surprised if these kids actually hate black people, I think they're just doing it for attention, and this kind of "shock" is an effective way to get attention.