Protesters face off with police and the National Guard on February 1 2017, near Cannon Ball, North Dakota.
Photograph: Ryan Vizzions
Trees in snow, St Moritz, 1947.
Photograph: Alfred Eisenstaedt
Jackie Kennedy, Laurentian mountains, Canada, 1968.
Photograph: Harry Benson
Christmas tree picking, Germany, 1947.
Photograph: Tony Vaccaro
Southern Pacific engine, Donner Pass, California, 1949.
Photograph: John Dominis
Reindeer being herded, Finland, 1940.
Photograph: Carl Mydans
Christmas Day in Rome, Italy, 1965.
Photograph: Tony Vaccaro