As the United States welcomes its first African-American president, Japan is still struggling with prejudices that are preventing it from breaking ancient taboos and installing a minority as its leader, some say.
Nearly a decade ago, seasoned politician Hiromu Nonaka was on the verge of becoming prime minister in a heated battle with the man who now holds the post, Taro Aso.
The issue took an ugly turn when Nonaka's roots as a "burakumin," or a descendant of former outcasts, was allegedly raised by Aso, the scion of a wealthy, establishment family.
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