Justice is done
The phrase one says when Osama Bin Laden is killed.
Person A: "Did you hear? Osama Bin Laden is dead!"
Person B: "Justice is done."
Person B: "Justice is done."
Justice has been done
The phrase someone says when they hear the news that Osama Bin Laden is dead.
Person A: "Did you hear? Osama Bin Laden is dead!"
Person B: "Justice has been done."
Person B: "Justice has been done."