A contemplative practice is any act, habitually entered into with your whole heart, as a way of awakening, deepening, and sustaining a contemplative experience of the inherent holiness of the present moment. The critical factor is not so much what the practice is in its externals as the extent to which the practice incarnates an utterly sincere stance of awakening and surrendering to the Godly nature of the present moment.
In spiritual maturity, the opposite of injustice is not justice, but compassion. Not me against you, not me straightening out the present ill, fighting to gain a just result for myself and others, but compassion, a life that goes against nothing and fulfills everything.