My guess(educated)... the young black man/men sometimes have trouble assimilating into the island way of things. A gang banger won't get much respect on the street from local types especially south pacific islanders with the same skin tone. I'm thinking the young black man was disrespected recently, and was forced to retreat because numbers were not on his side. He returns to the scene, with an AR, and randomly fires into a crowd, most of which probably had nothing to do with the shooter's current mood. Typical behavior of an east coast city cretin. Cowardly weasel move. Some people should not be allowed to breed.