Nazi looting of artworks by Vincent van Gogh
Many priceless artworks by the Dutch Post-Impressionist artist Vincent van Gogh were looted by Nazis during 1933–1945, mostly from Jewish collectors forced into exile or murdered. Some of these works have disappeared into private collections, others have resurfaced in museums, at auction, or have been reclaimed, often in high profile lawsuits taken by their former owners.
Source: Wikipedia — Nazi looting of artworks by Vincent van Gogh (CC BY-SA 4.0)