Usually such "international laws" are only advisory and not binding on member nations. After decades of member nations flouting UN "laws" I can't see them as reliable or effective support in most arguments. I support the policy behind the privacy "laws" of the UN, but enforcing them seems to fall short.

Enforcement mechanisms are weak, but they still exist to set a cultural norm and an ideal to strive towards. Regardless, I have also laid out an argument at length as to why society would logically want to have this be a human right for its own good, regardless of any appeal to existing authority.