People are saying that this is a very difficult problem to solve. It is not.
The problem is not classifying people as "animals;" the problem is classifying people as a known stereotype. Make a list of every animal/thing that correlates to a known stereotype in humans. Then program your AI to never classify those animals/things.
It is not a big deal if your AI isn't able to detect gorillas. That doesn't really affect UX.
I will add that just because it is an easy problem to solve does not mean they should solve it. An AI classifying someone as something else should be something to laugh at, not take offense to.