How should I deal with a disappointing family past?

[collenga]

I have been researching some of the people my dad was friends with while he was alive and come to realize that these people have close ties to communism. These were close friends of my father's and they would come over frequently when I was growing up. Due to the far-left nature they imposed on my dad, my entire family has been destroyed. My siblings are God-hating, America-hating liberals whom I no longer speak to. My dad was a Christian but my brainwashed siblings (and even most of their own kids) have decided to take the hippy, far-left route instead of being responsible, individuals. Because I decided to stick with the Christian morals my father left me, my siblings and I no longer speak. Its sad because I no longer celebrate Christmas because they always are insulting me (not to mention I don't feel it is appropriate to celebrate Christmas with a bunch of people who insult Christ) It is really hard to come to terms with the people and political views my father stood behind and I feel lost and betrayed. My mom is anti-communist and I feel if I showed her the proof that my dad's friends were communists it would hurt her. What should I do?