Explanation: The reason we do this is because the man started WW2 and caused the deaths of 6 million jews and killed more people of smaller communities.
Because this is history, the names used can never be forgotten as long as they are in history. For example, if I killed someone famous, my name would be in history, and my generation's lives would be ruined because people would remark, "Isn't that the man who killed someone else look at his child."