A member of the federal police holds an hourglass with Nazi markings on Friday at the Interpol headquarters in Buenos Aires, Argentina. Natacha Pisarenko/AP hide caption
Holocaust Museum
The Pokémon Go mobile game is the top-grossing app for Android and iPhone. Today, the U.S. Holocaust Museum and Arlington National Cemetery asked people to refrain from using the game while visiting the somber sites. Richard Vogel/AP hide caption
In the Hall of Remembrance at the U.S. Holocaust Memorial Museum, visitors can light candles in memory of the 6 million Jews killed by the Nazis and their collaborators during World War II. Nicholas Kamm /AFP/Getty Images hide caption