Author-activist Dan Savage argues that straight marriage is more likely than gay marriage to lead to polygamy.

Savage, a co-founder of the It Gets Better Project, made his remarks during a wide-ranging interview with HuffPost Live.

“When people talk about, you know, gay marriage is going to lead to polygamy, it's going to lead to incest they're just throwing up smokescreens,” Savage said. “You know, straight marriage, most polygamist societies and most marriage throughout history has been polygamist – one man, many wives – has been heterosexual.”

“So, if anything puts us on the slippery slope to polygamy, it's heterosexual marriage. We want to protect ourselves from polygamy, ban straight marriage, because it has historically led to polygamy. And the same thing with incest. Most incest that goes on is heterosexuals. We want to protect the world from incest, we need to stop straight people from having sex forever.” (The video is embedded on this page. Visit our video library for more videos.)