I grew up with a parent who taught me logic and how to defeat an opponent by coming up with a tricky premise... etc. I finally caught on to what he was doing and started questioning /challenging / and disagreeing with his premises.
After my parents passed, my sister took up the conservative mantle of fear, anger and righteousness on a warpath to make others who don't agree with her wrong. Though she is not a narcissist she does have tendencies.
I found it impossible to talk with my father, my sister and my mother - but on her part due to her highly critical nature. When I'm around my sister if I do engage her in environmental issues or humanitarian ones I go to emotions. I have given up on helping others that are conservatives about sharing and caring. Instead I explore what they want, how they will feel less stressed, happy and safe in the world. I keep asking questions to see if I can find a common emotional ground. So far - I haven't succeeded.