Humans have a natural propensity towards violence, our societies are steeped in it. From the thugs kicking the shite out of each other outside the pubs and bars at the weekends, the endless feuds and conflicts over religions etc, our entertainment is saturated with the most appalling violence we don't even bat an eyelid at now.

Our violence towards the natural world is killing it and us, and still we don't have the collective will to stop it now; our inaction forces untold suffering on people unable to defend themselves.

We are selected by evolution to be violent, and nothing we can do will ever stop that. Individually we might be able to arrest our urge to violence even in extreme situations, but collectively we have an almost lunatic bloodlust.