One thing I have to comment on re: taunting the tigers. If you have ever been to a zoo, you have likely witnessed animals being teased. It is an unfortunate fact of zoos in general. At every single zoo on the planet, someone, somewhere, is teasing the animals. Typically it is kids so young they do not even realize they are teasing, but yeah, there are a fair share of those who really should know better.
However, given that, are tigers usually kept in an enclosure with walls low enough that it can leap over if taunted? These guys sound like, no are idiots, and yeah, they screwed up royally, but it could have easily been a crying child, or too many balloons bobbing around, dirty diaper smells, or something equally as trivial that set the tiger off. We do not know how a wild animal will react, simple as that, although I imagine shooting one with a slingshot should seem like a bad career choice.
I am not trying to defend these morons (personal judgement call here) but it is painfully obvious that this could have been an even more horrific disaster involving children. Regardless of what we think of these idiots, unless the DA decides to hold them culpable, they will likely end up with millions of zoo/city $$ in their pockets because that zoo was/is unsafe and poorly run. No amount of arguing about vodka and slingshots can change 12.5 foot walls, sorry.
What has not been widely reported, and has been mostly forgotten as a news story is a report 7 or 8 years ago wherein a SF zoo visitor claimed he notified the zoo keepers that one of the tigers had entered the moat. He was supposedly met with disdain and ignored acording to his report. If true, it seems a tragic pattern of events perhaps all too common at the SF zoo.
What is becoming clear is that there was confusion, chaos, and sadly, death Christmas Day, with the zoo staff initially botching the response. These idiot guys are to blame, but the zoo keepers, IMNSHO, are just as involved.
Otony