14 Facing the frequent accusations made against the Church, that it is indifferent to social problems, or incapable of solving them, do not desist from proclaiming that only the teaching and the work of the Church, assisted as it is by its Divine Founder, can furnish a remedy for the very grave ills which burden humanity. It is for you then (as you have already shown your wish to do) to draw from these fruitful principles the certain norms to solve the grave social questions with which your country is struggling today, which are, for example, the agrarian problem, the reduction of the latifundia (large landed estates), the improvement of the living conditions of the working men and their families.
Source: Firmissimam Constantiam (Vatican.va)