That is my feeling exactly. I don't care if these boys were taunting the animal, it shouldn't be able to get out no matter what. If I took my kids to the zoo I would not want to hear that the tigers can't escape unless they are provoked. Hell, some idiot is bound to do that sooner or later. Once out, this cat might have turned on anyone. What kind of security do they have there? Can kids with slingshots pepper all the animals with acorns?
How would you like to live next door to a prison, knowing that their security is "strong enough to contain the most violent inmate... unless he is provoked."