What am I getting at: equality, progressive ideals, liberalism, some form of humanism? Hell no. I'm getting at this: when referring to a person (no matter the stature), use who and whom, not that or which. Don't say The man that shot the rooster is bad, but The man who shot the rooster is bad. Same goes for women, kids, grandparents, and whoever identifies as human. And for anything else, use that. The fine lady, who was dressed in all black, wrote with a pen that stuck painfully to her fist.
All humans use who; all named animals (or animals within a member-defined societal system) use who; and everything else uses that. Couldn't be simpler.