Any law that upliftshuman personality is just. Any law that degrades human personality is unjust.
MLK uses moral philosophy, especially drawing on St. Thomas Aquinas, to differentiate just and unjust laws. By grounding his argument in universal ethics rather than personal opinion, he justifies civil disobedience as a moral duty. This connects segregation not only to legal injustice but to spiritual and human harm, strengthening his claim that breaking unjust laws is actually an act of respect for true justice.