The right side of the wealth bell curve fears the left side of the wealth bell curve. Rioting mobs with torches and pitchforks scare them the most. They do not fear offending Republicans or conservatives at all. This graphic explains why they support Planned Parenthood:
I don't think it's fear of pitchforks. They are smug and safe in gated communities, and are not only blissfully certain that the demographics won't bother them...they like the idea of pitchforkers going after white people with children.
I've been around and around with it for many years. There's something about children that liberals just hate, and feel threatened by in some madly irrational and hateful way.