Don't waste your time. Say this: "Do you accept each individual is an end in themselves?". If they say no, tell them...they are a waste of your time....
I feel as an individual citizen, I do this, but I do feel like only 1/3 of us are doing it. Or you could see it the other way, that the US has always been the worst of it.
It leads to an extinction of universal values, but a detached consensual value system floating in an overall state of war could literally kill others to maintain itself while agents in the in group are good to each other.
If we can just avoid the worst...I think we would be in good shape....nobody tells others how to be EXCEPT where they disrespect the rights of others....