If the KKK didn't exist, how would the anti-KKKers make the argument that we must be vigilante against them? (and raise money accordingly...)
Scott Lively needs anger against gay people to keep his fans whipped up and sending their donations...
But gay activist organizations also need the Scott Livelys to show that there is a threat...
And get their donations flowing in...(If Scott Lively is just one big bigoted loudmouth who really doesn't amount to much, he wont seem like much of a threat...)
You know I hate to be cynical, but that seems like a difficult argument to disagree with...

They hate each other, but they need each other...