http status code, 451

[mbarinov]

A new http status code, "Unavailable For Legal Reasons".
This http code allows us to provide a fair reason when we can't return some data to the client by legal issues. Also, IETF made it standard. https://datatracker.ietf.org/doc/draft-ietf-httpbis-legally-restricted-status/

[ChALkeR]

One more ref: https://twitter.com/mnot/status/677712170038124544