BLM is not full of cupcakeers, retarded or otherwise AFAIK.
It's laudable that you make a distinction between black folks and cupcakeers, but the BLM members out burning and looting strike me as the latter group seizing on an excuse to engage in their usual monkeyshines under the cover of grievance; the former group, while they certainly have cause to share the grievance, didn't share the behavior.
It's not skin color; it's
behavior. (Granting the fact, of course, that behavior tends to correlate with culture, and culture in turn tends to correlate with skin color. You don't tend to see a lot of ethnic Swedes engaging in gang wars, for example...)