Not the one you’re thinking about. A great post at Calitics summarizes the history.
Along with Assemblyman Kenneth Cory, State Senator George Moscone authored what would become known as the Privacy Initiative. In November 1972, the Privacy Initiative was submitted to California voters as Proposition 11. It passed overwhelmingly.
Proposition 11 is remarkable in its simplicity. Aside from changing the sexist reference to “men” to “people,” it added a single word to Article I, Section I of the California Constitution: privacy. Kenneth Cory and George Moscone’s proposed amendment was as follows:
SECTION 1. All men people are by nature free and independent, and have certain inalienable rights, among which are those of enjoying and defending life and liberty; acquiring, possessing, and protecting property; and pursuing and obtaining safety, and happiness, and privacy.
In their argument in support of Proposition 11, which appeared in the 1972 Ballot Pamphlet, Assemblyman Cory and Senator Moscone said: The right of privacy is the right to be left alone. It is a fundamental and compelling interest. It protects our homes, our families, our thoughts, our emotions, our expressions, our personalities, our freedom to associate with the people we choose. (emphasis mine).