Hitler, Stalin, Mao, Kim Jong Il, Saddam Hussein, Bin Laden, all obsessed with how to make the world more 'fair' in their eyes, I think that's the greatest danger, when you forget personal faith you claim inherent superiority, that can hence be 'justly enforced'. Anyone who disagrees is demonized for being unfair by definition.
And likewise I think that's the best part about faith, scrutinize yourself, how can you be a better person.
Define "fair" - is it fair to keep the fruits of your labor?
Life is not fair - entropy, death, you might as well make a law changing the magnitude of gravity, as make a law trying to create a world that is fair.