When has there ever been a culture, in the history of the earth, that dispensed fair trials to the masses. Ever.
What made the United States experiment unique was not that it gave the average person justice. It's that it gave the average person a CHANCE at justice.
Go ahead, yuk it up, get all sarcastic and bitter, spell it "Amerika" and all. That chance at justice is something that 99.99999 percent of the people who have walked the face of planet never had.