Timur Serebrykov

(In 2008, while working as a guard at the Carnegie Museum of Art in Pittsburgh, Serebrykov attacked Vija Celmens’ painting “Night Sky #2”, scratching the canvas’ surface with his keys.

“I didn’t like the painting,” Serebrykov told police when they arrested him. “I’m sorry.”

The painting was restored, although it still bears a faint scar.)