Heartrending Release, 1945. This once in a lifetime image depicts Holocaust survivors at the moment of realizing they are liberated. This is such candid, raw photo you would think it was taken on a cellphone at the spur of the moment.
This is maybe one of the most powerful pictures I have ever seen. The numbers on the arms are from prisoners of Nazi concentration camps. The numbers replaced their names while at the camps and they were tattooed on so that they could be easily tracked by the Germans. This is why we study history. So this never happens again.