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As the 20th century progressed, artists used the Mona Lisa to challenge traditional ideas of "high art."

By the mid-20th century, the painting became a symbol of mass production. mona-lisa-20th-century-thumb.jpg

: In 1919, he created L.H.O.O.Q. , simply drawing a mustache and goatee on a postcard of the painting. As the 20th century progressed, artists used the

: Vincenzo Peruggia, an Italian handyman, stole the painting from the Louvre by hiding in a broom closet. As the 20th century progressed

: It reflected how the 20th century consumed art like a commercial product—processed, repeated, and sold.