The 10 Most Extreme Religious Groups of All Time

When it comes to the most extreme religious groups of all time, what’s on your list?

There are some obvious entries — hello, Westboro Baptist Church! — but even I hadn’t heard of the group with the slogan “Save the Planet, Kill Yourself.”

As with all Top 10 lists, this is definitive, and no one will ever argue about any of this.

(via Alltime10s)