You Can't Reason With Unreasoning
Regarding changing minds (again)--
You can't reason with unreasoning, as TMI suggested, but you can do an end-run around their filters.
Like taking lib friends to enjoy shooting. Get one good idea established, contrary to their expectations.
Daughter often talks about dealing with her friends in the 20s-30s age group, and finding ways to suggest how to think about something that leaves them agreeing to what they might otherwise have argued with.
Way I heard it, in a religious context, was, don't try to take error away from someone - try to get the truth in and let truth drive out the error. (Something like that.)