The above is an over-reaction.
Sorry.
It is true there were those attitudes in those days. "Forgive them Father, etc."
And, while I don't particularly like seeing them described as reasonable even then, it's probably an accurate reporting of the prevailing attitudes of some people.
Even so, some things are just plain WRONG. Humans are humans, quite a jump above animals, and just because one doesn't recognize a dog or cat as sentient beings doesn't excuse animal abuse.
For that part of my post which neglected to recognize some of what you said as describing the past attitude of slave traders and their supporters, I apologize. I wish I hadn't done that.
Arf