That's right.
We don't.
For quite some time now actually.
Wasn't the guardian itself that took down the letter from Osama Bin Laden to the American people due to the risk the general populace may actually understand it?
Discussion
The truth always finds a way 
Indeed
note1v98zmwdw2atexhmsm84an4dw9u0q4qplw7e9vcx5c2ednpv7fmkqz7jmql
lol forgot about that letter. The UK actually took it down? US agencies are still hosting it publicly
https://www.dni.gov/files/documents/ubl2016/english/To%20the%20American%20people.pdf
No, this isn't the correct letter? Right?
I believe this is the correct one?
https://www.dni.gov/files/documents/ubl/english/Letter%20to%20the%20American%20people.pdf
The guardian was the custodian for 21 years in open public web.
But one day, people started reading it, and that day was a few months back. And they had what's called a "single phone call" failure and had to take it down.
Much like Julian Assange really.