There is nothing "liberal" or political about this. It is against the law in all 50 states and no one is trying to defend it but these two sick puppies. How do you get "liberal" out of this?
Because liberals always defend sick bahavior, weather to piss off the middle class or to push their immoral agenda
No, liberals do not condone sick behaviour. They condone non-incestuous behaviour between consenting adults, where there are no power positions involved. Ergo, sex with your mother/child, is always wrong.
Typical liberal obfuscation. First off, you are deciding what is immoral for others, that's called hypocrisy. Secondly, power positions are A: in many relationships and B: none of your business. We are talking about two adults here.
The bottom line is you want YOUR morals imposed while complaining about others' morals. Morals that have been around since the dawn of man.