justice for fur aka gorilla killed at Cincinnati zoo

As you may all have heard by now I call him fur the gorilla killed at Cincinnati zoo. I feel there was no need to kill him they could have tranquilized him he was showing no signs of agression . the parents should be held accountable for being neglicient in keeping an eye on there child who climbed over and not fell in. This is an outrage and I say it's enough abuse on animals! Look what happened to Cecil and nothing was ever done about that situation. I say it's time to close all zoos and release these animals to there natural habitat. End the abuse that humans have against innocent animals. They never asked to be displayed for human pleasure. These animals live a depressed life. Its time to give them all freedom. After all its what you all preach that america is for the free then free these animals so that they can be happy.