Earthlings (2005)

as we are born into a civilisation taking for granted that exploitation of other live beings is something natural and ethically acceptable / neutral.

Unfortunately, our lifestyle decisions tend to support a machninery of suffering only comparable to nazi concentration camps.

oh, and speaking of, if you lived far enough (temporarily / culturally / geographically) it's good to recall once in a while what atrocites humans are capable of, even in regards to other humans:

"Zone of Interest" - fresh movie about everyday life in proximity of death camps