My comment policy is simple.
I realize that the quotes that are our topics of discussion often feature extreme vulgarity, bigotry, racism, and vicious personal attacks. Given the source material, that is unavoidable. We, however, are better than that, and I expect you to treat your fellow commenters with respect. Personal attacks, threats of violence, spamming, and the like will not be tolerated.
That being said, I will not filter posts for political content. If a liberal reader wishes to defend the validity of the viewpoints expressed in the quotes under discussion, he or she is welcome to do so. No one was ever convinced of the wrongness of their position by having their speech censored.