They positioned themselves as a “minority oppressed” group in the same league as African Americans seeking redress/equality/etc. They got some scientists to say that homosexuality was genetic. They infiltrated political groups on both sides along with cacademia...and the gullible churches. Basically they followed “rules for the radicals” better than any other subversive group. Infiltrate and take over institutions.
All according to plan: http://conservapedia.com/Homosexual_agenda#Strategies_and_psychological_tactics
You are correct and it has been coming down the road for decades in many other groups/institutions.
Now it is the GOP/CPAC’s time.