I nominate these kids and their parents. There are several posts over on notalwaysright.com where SS zoogoers want the keepers to go into the enclosures and "make them do something." Because going into the lion/tiger/bear enclosure and poking them with a stick is SUCH a good idea.
To me it is unacceptable to scream at the animals or bang on their enclosures.
"Nothing new under the sun" -- in the UK, we have a doggerel ballad originating from well over a century back, long beloved as an item of plebeian bad-taste "gallows humour": the tale of "Albert and the Lion". In summary -- young Albert and his parents go to the zoo; Albert's most prized possession is his "stick with an 'orse's 'ead 'andle". The crucial few verses:
There were one great big lion called Wallace;
His nose were all covered with scars --
He lay in a somnolent posture
With the side of his face next the bars.
Now Albert had heard about lions,
How they was ferocious and wild --
To see Wallace lying so peaceful,
Well, it didn't seem right to the child.
So straightway the brave little feller,
Not showing a morsel of fear,
Took 'is stick with its 'orse's 'ead 'andle
And pushed it in Wallace's ear.
You could see that the lion didn't like it,
For giving a kind of a roll,
'E pulled Albert inside the cage with 'im,
And swallowed the little lad 'ole.
Many more verses; with Albert's parents more concerned about getting their zoo-entrance money back, plus additional compensation, than distressed about the tragic loss of their son; in which they're mostly disappointed. No suggestion of any bad consequences for Wallace, from his misdemeanour. Those were the days...