https://www.youtube.com/watch?v=UXHwIrEpeSQ
At Oregon coast Zoo this evil monkey was doing a dance and his partner was playing with his basketball and when he through the ball against the roof a few mo...
The chimps were not dancing, or playing. They are clearly pissed. The "dance" and noises are ways to say "this is our territory, not yours, back off". Throwing the ball is an act of aggression, but since nobody took a clue he made it even clearer with poop.
For more sociable interactions between humans and other apes check this video ("Human, you have you baby! I'm going to show you mine!").
Yup, basically. They'll throw whatever they have near them at you; and this is just my guess but I think that they have enough of a theory of mind to think "I don't like poop smell so you don't like it either".
I also feel like the time when the other guy grabs the cage he was trying to find a way out, to get rid of the annoyers.