Last summer in the aftermath of the tragic shooting of the silverback gorilla Harambe, I asked my agnostic and atheist friends on Facebook if the Cincinnati Zoo was morally justified in shooting a gorilla to save a small child. It was a very interesting Facebook thread.

Most of those¬†friends did believe that a human life is more valuable than a gorilla’s (though not all did – and I told those people not to take offense if I declined a dinner invitation to their house – I prefer to eat with people who see a clear difference between me and what is served for dinner!). But what was interesting to me was the justification these nonbelievers offered for privileging human life over animal life. For most of them, this was simply a matter of choosing the human “tribe” over the gorilla “tribe.” As one friend said:

The only obligations that would seem to exist are within one’s own tribe.

This sentiment was shared by many participants on the thread. Another friend concluded: Continue reading