And frankly, if the kid had been white, it would have been talked about.
Also, that gorilla wasn't harming the boy; it look as though he was trying help him. OTOH, he didn't follow his handlers orders and leave and no, nobody knew what he would have done.
You let an ape drag you by one arm, through the water, over the rocks, at the fastest speed most humans can run, and then you can tell me the ape isn't 'harming' you. (If your arm is still attached and you are alive).