Vandalism of art refers to intentional damage of an artwork (for unintentional damage see accidental damage of art). The object, usually exhibited in public, becomes damaged as a result of the act, and remains in place right after the act. This may distinguish it from art destruction and iconoclasm, where it may be wholly destroyed and removed, and art theft, or looting.
Numerous acts of vandalism against art exhibits are known and some objects, such as Mona Lisa, Night Watch and The Little Mermaid, have been intentionally damaged several times. Many vandals were diagnosed with a mental disorder and some, such as Hans-Joachim Bohlmann, had a history of attacking artworks. A vast amount of damage consists of leaving a minor scratch, a stuck chewing gum, a pencil mark and so on, and usually escapes publicity. More visible acts of vandalism were premeditated, as the tool of destruction – a knife, paint, acid or hammer – was intentionally brought to the scene. In most cases, the artworks were restored. Restorations were costly and time-consuming and in many cases were followed by shielding the artwork from future attacks.
The term vandalisme was coined in 1794 by Henri Grégoire, bishop of Blois, to describe the destruction of artwork following the French Revolution. The term originated from the invasion of Rome in 455 by the East Germanic tribe of Vandals, which resulted in destruction of numerous artworks, and was quickly adopted across Europe.
Hans-Joachim Bohlmann (1937–2009) was a German serial vandal. Between 1977 and 2006, he damaged over 50 paintings worth more than 270 million Deutsche Marks (about 138 million euros) by Rubens, Rembrandt, Dürer and other artists. Bohlmann had a personality disorder and was treated in various psychiatric hospitals since a young age. In most acts, he sprayed paintings with sulfuric acid, targeting faces of the personages.