Ex Wikipedia: Over 186 constitutions mention the right to privacy
https://www.constituteproject.org/constitutions?key=privacy
Oh, and sniper: because the right to privacy will be defended by a number of individuals with radical violence, as you should know if you ever visited the world, so evidently I should not even need to proceed from «Yes. Implicitly».
So contextually: if it were not anonymous, it would not be used (but by a specific class of entities).
In legal matters, those two rarely converge. On technical matters both are usually abstracted as "keeping information secret", but even then they often require widely different techniques to be preserved.