The barriers at the exhibit exceeded the protocols. The boy climbed over the fence very quickly and fell into the water very quickly.
A lot of news reports purposely edited out the parts of the video where the gorilla flings the boy through the water. And they never mentioned that, before the video began, the gorilla threw the boy against the wall. That throw is probably what cause the boy’s concussion.
That what I mean by saying that many did not report the truth. They had the truth because they had the entire video and the witnesses’ statements. They decided to not report that side of it.
But you can believe whatever you choose to believe.
What I'm suggesting is that perhaps the protocols aren't enough to protect the animals from stupid people. I'm basing it partly on observation at the zoo near here. I've also suggested that with an open exhibit such as this one with gorillas, it seems a zoo attendant should be present when the exhibit is being viewed by the public.