Why?

"Far too many Catholics are not familiar with the basic content of Catholic social teaching. More fundamentally, many Catholics do not adequately understand that the social teaching of the Church is an essential part of Catholic faith. This poses a serious challenge for all Catholics, since it weakens our capacity to be a Church that is true to the demands of the Gospel. We need to do more to share the social mission and message of our Church."

Sharing Catholic Social Teaching: Challenges and Directions                 
U.S. Catholic Bishops