Photo courtesy of Wikipedia
I was watching the news the other day and they showed a story of a man vandalizing Picasso's 'Woman in a Red Armchair'. The man was caught on camera by another person in the museum using his cellphone. The vandal told the man who recorded the video that he was an "up-and-coming artist, who wanted to honor Picasso." I personally would be furious if someone did this to my artwork, and I would not feel honored at all.
This is a link to the news story, and it includes the video.
Hannah Comeau (Art 5)