I think all the topics being deleted should be put into a section called "Deleted Topics" or "Trash Can" or "Everthing Else" as James Bond said.
Today it happened again that 7th deleted a topic from me. And I think this treatment is quite unfair - also if it is something against the board rules - because each thought counts. But: It is ok, to move all the stuff in a trash can and for being fair and opened we should make the Trash can viewable for all users.
Probably with a warning like "All posts in trash can have been deleted and you are looking at them on your own risk! Please keep this in your mind!".
But I do not think it good to censor stuff - or are we living in a Nationalistic Ragime like during World War II, because it seems a little like this