Liberalism is certainly illustrating Satan's influence in this fallen world. What is evil is definitely Liberal - including the Liberal churches.
Mother, father, marriage - Bible established roles and institutions of God. When man the evil hearted sinner interferes with these and anything else - Then the result is anathema, aversion, vile and satanic.
I've always been particular about the term "parent". It should only be a persons biological mom and dad. But we live in a country where if a child has parents who divorce and remarry or live with someone else then that someone else is called a parent too. Nonsense!