Catechism of the Catholic Church §1947 — excerpt
The equal dignity of human persons requires the effort to reduce excessive social and economic inequalities. It gives urgency to the elimination of sinful inequalities.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.