Sting sang of soul cages
Tori Amos sang that its an empty cage if you kill the bird
We kill each other over resources and religion, I think that it all started at the tower of Babel. The Christians have there version of the story. And the ancient Summarians have theirs . So who ya gonna believe the guys who wrote the tale who were from there. Or a guy who got together with other guys in Niciea and decided that all of these stories should be in the bible, and all agreed, That is until A certain King needed a divorce and demanded a re-write.