We have 37 year old son who has been married for 3 years. This is the second marriage for both him and his wife. His wife has a 10 year old son. They all went to counseling to form a blended family. It was a success and both my son's wife and her son were accepted into our family. We treated the wife's son as our own grandchild. They were all told by us we are so happy for all of them. We spent holidays with my son's new family including the in-laws. Both my wife and myself have liberal views when it comes to politics. My son's in-laws including his wife do not share the same views, which we respect. We have never had a conversation with the our daughter-in-law, or her family, but apparently social media has played a part in tearing our new happy family apart. My wife will post numerous political material on her Facebook account, which my son's wife and in-law has been following all along. Fast forward to the problem. My son and his wife are expecting a child in October. My daughter-in law and her mother has sent a cruel hurtful email and Facebook message belittling my wife's view. They became so angry, my son's mother-in -law threaten my wife and told her to stay out of her daughters life and stop sucking the life out of our son. We were dumbfounded at the entire situation. Instead of my son saying something to his wife about her behavior he stayed silent. At this point we have no contact with my son and his family, and with a baby due, which is our first grandchild we are worried we will never be able to see the baby. This all started over political views which were never discussed with any of them other than postings on social media. At this point we don't know how to handle this situation and get back into our son's life.