"I thought at the time and still think that the Nuremberg trials
were unprincipled. Law was created ex post facto to suit
the passion and clamor of the time. The concept of ex post facto
law is not congenial to the Anglo-American viewpoint on law. Before
criminal penalties can be imposed there must be fair warning that
the conduct which one undertook was criminal."
William O. Douglas, LL.D.
(Associate Justice, Supreme Court of the U.S., 1939-1975)