Extortion, in common law, an act of a public official who uses his or her position to obtain money or property illegally. Many states define the crime more broadly to include blackmail and similar acts committed by anyone.
Such famous artworks as 'Mona Lisa' and 'The Scream' have been stolen and returned; some have never been found. Art burglars either keep the artwork for themselves, or try to ransom it back to the original owner. Learn about 7 notorious art thefts.
The U.S. was quick to denounce 9/11 as an act of terrorism. Drawing the line between mass murder and terrorism isn't always that straightforward though.