Watching chimpanzees reactions to infanticide imagery bring evidence of Chimpanzee’s sense of right and wrong. Not far from what humans would deem relevant: From Claudia Rudolf et alli paper “Chimpanzees’ Bystander Reactions to Infanticide”
“we presented chimpanzees with videos depicting a putative norm violation: unfamiliar nonspecific engaging in infanticidal attacks on an infant chimpanzee. The chimpanzees looked far longer at infanticide scenes than at control videos showing nut cracking, hunting a colobus monkey, or displays and aggression among adult males. Furthermore, several alternative explanations for this looking pattern could be ruled out. However, infanticide scenes did not generally elicit higher arousal. We propose that chimpanzees as uninvolved bystanders may detect norm violations but may restrict emotional reactions to such situations to in-group contexts. We discuss the implications for the evolution of human morality.”
This latter behavior described is not unheard in humans, as Kitty Genovese murder case, when many bystanders failed to help to her as she was murdered and raped in two separate attacks. Not to mention mobs, lynching and other human habits.
Evidence at least as old as the bible is a reminder of how getting the sense of what is right is not enough – in case anyone say chimpanzee’s morals shouldering human’s is a clear upgrade.