I have never really liked discussing whether you have something to hide, as an argument for or against security or privacy. First, it's irrelevant - everyone has these rights no matter what. But also, once you start talking about "hiding", you have already lost the discussion - because it's a word that is associated with negative connotations.
I think we should change the discourse. I don't have anything to hide. But I do have many things to protect. I have the right to protect my privacy. I have the right to protect my communication. I have the right to protect my work. I have the right to protect my friends and family.