Defamation against David Duke?

guest commented on White Genocide in South Africa

Folks like him? He never committed any crime. They call him racist and white supremacist, but nobody ever presented a single quote of him showing that he believes that Whites are in any way superior to other races, nor that other races are inferior to Whites. I am pretty sure that in situation like this Alan Dershovitz, for example, would have sued for defamation.

http://www.davidbenariel.org/