So in 9th grade, my sadistic classmate said this to my face: “I saw your mom at the mid-autumn festival, she is just an ethnic minority”.
To which I replied “Yet my mom is still better than yours, and I'm still better than you.”
I was pretty proud of my avoidance. And I think it was an appropriate response. Do I often go around and flex my narcissism? Of course not. But there are people who deserve that treatment. For the same reason you don't want to argue reality with paranoid individuals, or you don't want to apologize to malicious people even if you do have part of the blame: reality is complex and there is no one right way to do things.
So whenever someone says you should treat everyone equally, always be humble, be united not divided. All I see is someone who lacks experience, which makes them boring to be around. Or someone who practices reaction formation, which makes them both boring and unsafe to have any interaction with.