Looking at a series of photos from 50 years ago showing John F. Kennedy during his presidential campaign and presidency, I was struck by how simple things seemed. Security was not particularly tight! He’s standing there on a kitchen stool among townsfolk. In other photos one sees that the cameras were rather plain, movie cameras had three lenses. The crowds pressed up around the cars. The first family was young. And then, again, how terribly hard it was that he was killed. See all 26 photos on Boston.com. Also, see the Life magazine feature with other recently released photos.