The Justice card, numbered XI (that's eleven in Roman numerals), is about logical liberation, making the logical fair choice because you value life and liberty; even when it's hard. Justice is about ensuring that mercy isn't misplaced, that the one doing harm is not favored over the one harmed. Secular law, equity, ethical business practices, the golden rule.
If the Justice card is in the obstacle position of a spread, then you're probably being too nice; allowing yourself to be walked all over in an effort to be a peacemaker. It indicates resistance to doing the logical thing, likely because feels mean to say no, to have boundaries, or to assert yourself. It can also indicate that someone is playing fast and loose with the spirit of the law.
If hte Justice card is in the solution position it indicates that it's time to balance the scales, to let the chips fall where they may, to allow fair consequences to happen. It's time to be impartial. Set aside your emotions and feelings, set aside your attachments, so you can do the right thing, even when its hard. Be matter-of-fact; it is what it is, and what must be done must be done.
NOTE: Picture slot intentionally left blank. Using NO pictures is on purpose so that these meanings can be more easily applied to any Tarot deck using the Smith-Waite system, aka: Rider-Waite Smith (RWS).