In case you've forgotten, the Nazis were pretty violent people. Sympathizing with them, and attempting to justify their actions or disputing the history of their murders is obviosly enough to consider the guy "violent". The clips I posted above are plenty enough to demonstrate that he wasn't put in jail simply for comparing abortion to the holocaust. He said and wrote quite a bit more than that.
I’ve asked you to post a link several times now. What are you afraid of???