Whistle blowers, watchdogs, activists, demonstration organisers, and political opponents for damn sure. If you were to say that they could receive special privilege to privacy to ensure that they could not be impeded, blackmailed, or pressured by governments or companies through lobbying then who makes the distinction, who grants them that freedom? Furthermore, sure, you might not be doing anything illegal but that is not always the case forever and with things constantly being made illegal like a recent ban on sodomy in one of the states you can bet your ass (pun intended) that someone somewhere would love to use that law against someone they do not like personally, professionally, or politically, and having unimpeded access to your phone is the surefire way to get that information. Information is power and it can and will be abused, if not now but in the future.