Police spokesman Bill Cassell said Joseph Peter Pepitone of Las Vegas was arrested and booked into county jail on a misdemeanor property damage charge.
A local Fox television crew filming a segment about graffiti Friday morning caught a shirtless and barefoot Pepitone throwing red paint on the front of the "Welcome to Fabulous Las Vegas" sign. The paint hit the first "U" in "Fabulous, then smeared through the word "Vegas."
Pepitone earlier told The Associated Press that he was planning a health care demonstration while wearing a barrel and a Santa Claus hat. He didn't mention defacing the sign.