Art theft is the theft of art. This is usually done for the purpose of resale or ransom; occasionally thieves are also commissioned by dedicated private collectors. Stolen art is sometimes used by criminals to secure loans.
Many thieves are motivated by the fact that reasonably valuable art pieces are worth millions of dollars and weigh only a few kilograms, at most. Transportation is also trivial, assuming the thief is willing to inflict some damage to the painting by cutting it off the frame and rolling it up into a tube carrier. While most high-profile museums have extremely tight security, ...