I keep getting "Friend requests" from people I knew in college. Out of curiosity, I clicked on the Facebook page of one of them. When I saw his favorite TV show was Rachel Maddow, I ignored him from then on. He still sends the requests; but it ain't gonna happen. Trouble is, once you "friend" an Obama supporting commie, you start getting posts from their like-mindless friends.
The one that hurt the most was a man who was my roommate, neighbor, and bud when we were Lieutenants, then Captains together. We reconnected on FB after a ten-year silence. Caught up on family, career (he is a LTC now, and I was a SFC).
Then we got to talking about the wars. He did two tours in Afghanistan, interacting with the locals; I did one tour downrange and a lot of black work. He talked so sympathetic about the Muslims you would have thought he had converted himself and his whole family; it sounded like Stockholm Syndrome.
The final straw was when he started sending me links about supporting The Kenyan. I cut all ties after that.