Oh, We Stupid Humans

I'm sure you've already heard about it. There was a tiger that escaped from it's enclosure at the San Francisco zoo. She killed one visitor and mauled two others who survived. The police were called, the tiger was shot and killed. Peace was restored.
WHAT??? Okay, so we take wild PREDATORS and lock them up. If they escape and kill, we kill them. Um ... tigers hunt. It's what they do. I'd also be willing to bet that SCARED tigers who are wandering around in unfamiliar territory (outside her enclosure ...) might go crazy and kill a LOT. So, we use that as justification to kill her.
Tigers are endangered people! Humans are not. Yes, it's sad that someone got killed, but there is no doubt in my mind that it is 100% the fault of the San Francisco Zoo that this even happened. The tiger should have been drugged, not killed. There are still 7 billion people on the planet and only 3000 tigers left in the wild. Sounds like only one can afford to lose some of it's viable members.