Falsification of the Past
Carol Anne found some great references on this topic and posted them on her FaceBook page, particularly on how Stalin's Communist cronies would not only murder dissidents or send them to exile with possible starvation and horrible death in Siberia, but literally remove them from photographs and histories.
"The most common examples of photograph alteration and falsification come from communist Russia. Unwanted persons, so-called "enemies of the people" were not only killed, but also removed from photographs where their presence was unwanted. Photographs were altered with the intent of changing the past."