I go by the reaction of my leftist Facebook friends reactions to things I post. When I call him a commie they freak. When I say he is no different than any other failed corrupt pol they get despondent.
My leftist friends rarely see anything I post is my guess.
A week ago I spent the better part of a week with one of them. We were betting on horses, drinking bourbon, and smoking cigars down in Kentucky.
But I took the opportunity one night to pull up the birth certificate from the Whitehouse's own website in front of him. I made sure he knew it was from the Whitehouse website. I blew the thing up 6x. I made sure he understood how to repeat what I doing. Then I navigated to the signatures and showed him the different pixel sizes. He isn't sufficiently stupid that he didn't recognize that something was wrong, so he was basically speechless.
You've got to hit these people between the eyes with a 2x4, or they're not going to notice.
ML/NJ