Beyonce posted a picture of her completed ballot for the 2012 Presidential election online today, which happens to be illegal in New York...
According to NY law
"Any person who...makes or keeps any memorandum of anything occurring within the booth, or directly or indirectly, reveals to another the name of any candidate voted for by such voter; or shows his ballot after it is prepared for voting, to any person so as to reveal the contents...is guilty of a misdemeanor."
She's not the only one. A quick trip round Twitter and Instagram shows thousands of people doing the exact same thing.