This famous video filmed at the Sasquatch Music Festival 2009 is often shown in corporations, team working classes, etc. and it actually shows an interesting aspect in psychology: the role of leading with a example (even if weird) and imitation.
A troop of Langur Monkeys show empathetic behaviour as they mourn what they think is a dead baby.
It's actually a robotic spy monke, designed to film them.
At the point they hug and console each other.
[📹 BBC]