The world’s deadliest terror attacks — and their common denominator

Remember that old Sesame Street song, “One of these things is not like the others…“?

That song kept running through my mind as I looked at this photo essay of the 15 deadliest terror attacks in the world.  I leave it to you to consider what distinguishes the majority of these terrorist attacks from that single, different minority attack.  (If you’re at a loss, a hint is the category to which I’ve assigned this post.)

Hat tip:  Lulu