After Prop. 8 Ruling, Critics Revive Debate Over Polygamy

"Unlike gay marriage, polygamy has been widely practiced throughout history. There are few civilizations, religions, or cultures where polygamy has not taken root. In fact, almost ever religion has, at some point in their development, accepted the legitimacy of polygamy ... This leaves proponents of same-sex marriage with two choices. They either have to accept that polygamy is just as legitimate as gay marriage or they must admit that there is no inherent "right" to expand the definition of marriage."

http://news.yahoo.com/s/atlantic/20100806/cm_atlantic/afterprop8rulingcr...