Um excuse me: I suppose it’s news that the guys who were mauled by Tatiana the tiger were standing on a rail and yelling at her, but that’s not exactly an excuse for what happened. The animals at the zoo aren’t supposed to get out. Period.
It’s terrible that people taunt the animals, but they do, and they have, and they will — and if the zoo pens and cages can’t hold the animals anyway, there’s a real problem.
BTW, it was highly unlikely that “taunting” got the tiger agitated. More likely she thought they were food. That’s a much more common predator response.