Adam Berry/Getty Images
A police van sits parked as visitors pass through the Christmas market at Breitscheidplatz, at which an attack by the driver of a truck deliberately plowing into a crowd two years earlier left 12 people dead and 56 others injured, on December 2, 2018 in Berlin, Germany. Christmas preparations are underway in the German capital, with stores exceptionally open on Sundays throughout the month of December.
Darren McCollester/Getty Images for Boston Children
Boston Celtics (L to R) back row, Matthew Reynolds, Kenny Graves, Daniel Thiels, Kyrie Irving, Guerschon Yabusele, Al Horford, Gordon Hayward, (front row) Marcus Morris, and Brad Stevens, sing Christmas carols with the kids at Boston Children's Hospital December 4, 2018 in Boston, Massachusetts.