Eva Mozes Kor and her twin sister were the victims of medical and genetic experiments at the hands of Josef Mengele in Auschwitz. She recently did an AMA on Reddit.
In 1941, the Special Operations Executive forged documents, including passports, in order to help the resistance. Here's the one they made for Adolf Hitler, with a better view of the photos available on this site.
A couple of Neo Nazis were going to kill 88 blacks and behead another 14, culminating in the assassination of Barack Obama. They aren't the first to attempt to keep him out of the White House.