Rather than censor in a thread about censorship, I think it best to counter uncomfortable comments with more information.

  Another really cool feature is the this hall of mailboxes which was designed by a french artist and includes a mailbox for every democratically elected official in German history. The hall also contains officials such as Hitler and Goebbels because they were democratically elected but they often have to repair the box because people visiting will often punch and kick their boxes

https://cice.blog.gustavus.edu/2015/01/21/visiting-the-reich...