Witnesses said the person was seen throwing pamphlets into the air before pouring a liquid on themselves outside the Manhattan courthouse.
Vandals defaced the artwork but now it's back and bigger than before.
New court documents mention "reports of possibly extensive and protracted criminal conduct".
New York mayor Bill de Blasio helped with the mural on Manhattan's Fifth Avenue.
A power shortage forced thousands of people into the streets of Manhattan. Then the singing began.
The penthouse boasts seven bedrooms, six bathrooms and panoramic views of the Manhattan skyline.