When Italy posted every citizen's taxable income on their website without warning, Italians were livid and 75 percent of you said that you would be, too. While most of the world remains in the dark about what other people are bringing home, Sweden, Finland, and Norway have the practice of publishing everyone's tax information each year.
The Italian government posted their citizens' details in an attempt to curb tax evasion, but Scandinavian governments share the information as a way to provide checks and balances. You don't have to worry about the US trying any funny business as federal law protects your privacy. Would you still mind your income on show if it were a customary procedure and wasn't sprung on you unexpectedly?