I had the same experience with a good friend. He was hysterical because I am not an authoritarian and he is. Completely. Like you said, a wall. So let be him a wall. I can not do anything. He is a good friend, as I said and he will be a good friend. I accept him with this wall in his brain. I know him since 1995. He helped me many times, he has good heart but in this subject he is sold with the lies and propaganda. And he is scare I can imagine.I recently had the same thought. I even thought, "I give up, I'm done with 3rd density. There's nothing you can do."!
Except for my wife (more or less), I am "alone". Everyone in my environment has bought what is for sale and they are absolutely irrational.
Yesterday I had a conversation with my sister and I really felt emotional pain at the lies that according to her are an absolute truth. An immovable wall.
I can not do anything.
All (really all) my family and my work environment have chosen and are completely impervious to anything other than "their truth".
Part of who I am is having the constant urge to "help," however I have learned that the vast majority "don't want to be helped"!
And my sister that is a good sister also but also a wall. We do not talk anymore. She does not call, we do no speak anymore by Skype.