Beauty and harmony are paramount in Islamic art. These qualities are also integral to the photographs, videos and films of Shirin Neshat. Born in Iran in 1957, the New York-based artist engages the Persian aesthetic and cultural traditions of her homeland to explore the ever-changing present of Iran. Her ravishing images show women crossing boundaries and asserting power despite Islamic norms that constrict their freedom. A rifle barrel protrudes like an earring alongside the face of a young woman in an image from Neshat’s 1996 series, “Women of Allah,” in the show She Who Tells a Story: Women Photographers from Iran and the Arab World, on view through Jan. 12 at the Museum of Fine Arts Boston.