I would argue the opposite. Truth is not easy, but it is much easier than justice. Truth exists in a definite manner. Justice has to be decided and is itself perceived by many different parties in a gamut of relevant shades (what was justice for other similar cases, what will be fair etc.) Furthermore, Justice is questioned at every other decision making moment. If I was cutting everybody's hand if they steal and then decide to just cut a finger, it will not be just to the people who lost their hands.

Edit: I am referring to the canonical definition of justice, not the bureaucratic one.