Hilfedemwahn, first of all, a person who commits a crime is addressed as a criminal, not crimer. Secondly, any, and all facts of history should be discussed so it won't repeat itself, especially the bad ones. As without any forms of discussions, we are no better than a mule on the farm or a monkey in a tree.

"I love constructive discussions."
like "Dummkopf" ?
everyone, who speaks about war, is a war crimer.
-end of the constructive discussion-