Since this isnt' a list merely about good people I would add Mussolini because he theorized fascism and shaped both Italian culture forever and inspired drastic changes in Europe and possibly if Hitler inspired himself on Mussolini it pretty much caused WWII.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you