Family Issues Support Group
Family issues is a huge range that go from minor conflict to major misbehaviour and even abuse on the part of individual members of the family occur. Whether you feel you are in a dysfunctional family or you're dealing with a very specific issue, this is the place to talk about it and find others who might be going through the same thing.
Based on what you posted, it sounds as though he suffers from narcissism also. I look at this personality type as having a very deep seeded neurosis. They throw insults at anyone they feel threatens that very fragile sense of self-esteem.
It is a double standard and not one, if I were you, would tolerate. To meet him to discuss how you could work out the relationship between you two will only result in more insults and you being defeated. You can't win or change the mind of a narcissist. He won't see your side, only his. Your sister, I'm afraid is probably a co-dependent.
As for the holidays, I would spend your time with family and friends that make you happy and not with someone that you have to constantly dodge insults with. I would refuse to have to walk on egg shells during the holiday season.