Since these perverts are almost all athiests, what “right” are they hanging their hat on?
Amazing, huh. They talk about “God given rights” as spelled out in the constitution but they don’t believe in God.
It can be looked at from two different angles.
One is the Declaration of Independence organic approach. Some consensual concept of God is in there, We might not all agree exactly on it, but we still agree in not picturing this God as hanging trees upside down by their roots from the clouds. There is a sense to the created order.
The other is the isolated Constitution approach. This has no affirmation of a transcendent source of rights, and so rights become whatever men managed to morph them to be.
Atheists and humanists have secular “celebrants” who can be licensed like clergy to perform ceremonies of union (marriage). They would be affected by state laws regarding same sex marriage.