...kinda conflicted a bit on this. ::)
Quote
IN THE EARLY hours of Wednesday morning, the age of robotic graffiti was born. KATSU, a well-known graffiti artist and vandal, used a hacked Phantom drone to paint a giant red scribble across Kendall Jenner's face on one of New York City's largest and most viewed billboards. By all accounts, it is the first time that a drone has been deployed for a major act of public vandalism.
http://www.wired.com/2015/04/age-drone-vandalism-begins-epic-nyc-tag/
Not all graffiti is vandalism.... but that clearly was. No message, no art. Just random defacing of property.