50 FAMOUS PHOTOS THAT CHANGED OUR WORLD

Take "Tank Man", the iconic image of a man standing in the middle of the road while a row full of tanks is heading towards him. We understand the power of this image, even though we know little about its circumstances.

Then there is the "Burning Monk", which shows that Thich Quang Duc is dying on fire stoically after he caught fire in protest. And, once again, even if we have no idea what I was protesting or we don't recognize the name of Thich Quang Duc, we know that image and know its power.

Modern history is full of famous photos like these, images that speak to us all in ways we can hardly articulate at times. They show us the best that humanity is capable of, as well as the worst, and everything else.