In an AAU game in the Atlanta area between the Houston Raptors and R.A.W. Athletics from Chicago, an all-out brawl broke out between players from R.A.W. and the officials. These videos were shared by Houston-area recruiting writer Doug Jones:

As noted by Yahoo, while it appears in the top video that it was the R.A.W. team that initiated contact with the officials, their coach Howard Martin tweeted that the refs were the instigators:

UPDATE: spoke to several witnessesJeff Eisenberg of Yahoo who put the onus on the Chicago team for the fight.