I guess they think that when Jesus supposedly said, "When you do these things unto the least of my brethren, you do it unto me" they thought he was only talking about when they do good things?
They are only Christians in name. The only time they refer to the New Testament is Easter and Christmas. The rest of the year they pound the Old Testament where they can find whatever sick shit they want somewhere in it's pages. It really isn't even their book. Even as goofy as Catholics are, they know this.