1. And then the chimpanzee just sort of moves away, frustrated and the tourist tries to get him back
The chimp did his best to communicate, seriously, who doesn't know food is a prime motivator? But the tourist, even when the chimp points directly at the cracker, then to his mouth and then to his hand, just imitates the hand movement and starts to do hand motions of his own to show the chimp that what he really wants it to get out of his enclosure.
It is depressing but interesting, it says a lot about the tourist.