> So can you do the ground work and show that a position like opposition to same sex marriage is actually frequently and casually labeled as extreme?

I suppose I could, but I'm honestly not interested in doing so to support a casual conversation on a web forum.

> I also disagree with the point in principle. We even have a word for it when a majority gets on the wrong side of rational (and goes to extremes), a mob.

Actually I'm not familiar with the term "mob" being used that way, and a quick search doesn't seem to support your usage either.