I don't think Christian ethics espouse an "us or them" mentality. Certainly, it's not what Jesus preached.
So in answer to your question, sometimes I'd choose us, and sometimes them, depending on who I thought was right in the particular circumstances.
Of course, you're free to feel differently. I only hope you don't call yourself a Christian.
For you sake or HIS? And just what do you do to Commies? Bash them by rebuking them? Where will that get you?