The fact that there exist some types of private information for which we recognize a right to maintain privacy does not at all imply it is morally wrong for the government to recognize a public right for some other type of information (salary ranges). In the US there exist both the Freedom of Information Act and the Fourth Amendment guarding against warrantless search. It's obviously clear that the government recognizes the right to demand public transparency for some types of information and the right to protect privacy for other information. You've made no attempt whatsoever to explain why this type of information should fall in one category or the other, just gestured to the existence of one of the categories and implied that this proves that the information in question belongs there.