"In general, the core moral and philosophical question at the heart of animal rights activism is now being seriously debated: Namely, what gives humans the right or justification to abuse, exploit, and torture non-human species? If there comes a day when some other species (broadly defined) — such as machines — surpass humans in intellect and cognitive complexity, will they have a valid moral claim to treat humans as commodities whose suffering and death can be assigned no value? The irreconcilable contradiction of lavishing love and protection on dogs and cats, while torturing and slaughtering farm animals capable of a deep emotional life and great suffering, is becoming increasingly apparent."
January 1, 1970
https://en.wikiquote.org/wiki/Animal_rights