Just in case you were wondering how things like promiscuity, divorce, abortion, samesex marriage, euthanasia and things of that ilk made it this far; it's basically a simple program that leads a society to gradually acquiesce to them.
They all start by "coming out of the closet" as a behavior that some people did anyway.
A champion for the rights of the particpants emerges and demands tolerance of the behavior.
The group of participants demand more than tolerance. They use the claim of being equal as citizens, therefore the behavior itself must also be accepted by all as equal.
The group insists that social structures be revised to accomodate their behavior in a public manner society wide.
The group seeks redress for past "injustice" saying that their behavior should have been accomodated all along. They demand equal footing in all respects for their behavior including rights to proselytize using societal resources regardless of the nature of the behavior or the effects it brings to the society.
The abandonment of the original position to capitulate to the special interest undermines the existing social contract and the society transforms.