It's sad how quickly people are to condemn the parents. Anyone can make a mistake, even one that leads to something so terrible. They could very well be terrible parents but I don't find it fair to throw immediate blame their way. They obviously know they screwed up.
It should also be a zoo's priority to make something like this extremely difficult to happen.
As for the gorilla, it did nothing wrong. Even if it killed the child, you can't villify wild animals. They're just doing what they do. They're not here to be our friends. Plus their natural behaviors can get mixed up since they're in a zoo. That said, I understand the need to kill the gorilla to save the child as quickly as possible.
By the way. I'm a hypocrite to a degree. Because if anyone driving puts my life in danger I'm more than happy to send curses their way and villify them. Fuck aggressive, negligent, and awful drivers.