All over the US government right now we hear rumors like this one, of the NSA forced to delete every doc in its internal systems that mentions privilege escalation attacks because the Grand Stupids In Charge won't allow the word "privilege" on any government server:
https://popular.info/p/the-nsas-big-delete
Every time I see shit like this, my mind returns to the backstory of Charles Stross's (@cstross) Glasshouse: history a mostly-missing muddled mystery after waves of deletions in centuries of censorship wars.