Read HTTP 451 (en.wikipedia.org)
In computer networking, HTTP 451 Unavailable For Legal Reasons is an error status code of the HTTP protocol to be displayed when the user requests a resource which cannot be served for legal reasons, such as a web page censored by a government. The number 451 is a reference to Ray Bradbury's 1953 dystopian novel Fahrenheit 451, in which books are outlawed.[2] 451 intends to provide more information than 403 Forbidden, which is often used for the same purpose.[3] This status code is standardized in RFC 7725.
I love that it’s a subtle nod to Fahrenheit 451.

👓 Google Condemns the Archival Web | Doc Searls

Read Google Condemns the Archival Web by Doc Searls (doc.blog)
The archival Web—the one you see through the protocol HTTP—will soon be condemned, cordoned off behind Google's police tape, labeled "insecure" on every current Chrome browser. For some perspective on this, imagine if suddenly all the national parks in the world became forbidden zones because nature created them before they could only be seen through crypto eyeglasses. Every legacy website, nearly all of which were created with no malice, commit no fraud and distribute no malware, will become haunted houses: still there, but too scary for most people to visit. It's easy to imagine, and Google wants you to imagine it.