21. Unidentified Beijing youths sing as they head to Tiananmen Square to join the pro-democracy protests, 1989.
22. The Gadget, the first Atomic Bomb, 1945.
23. A room in the Berlin Royal Palace, the 1920s.
24. A young Iranian communist holding two books about Russian revolution in her hands, one titled “History of the Russian revolution” and the other is titled “Young Lenin”, Tehran, 1979.
25. Female Viet Cong guerrilla, 1972.
