You might want to actually study the subject rather than depending on what others say. See:
Catholic Social Justice: Not What You Think It Is
http://www.heritage.org/research/lecture/social-justice-not-what-you-think-it-is ^ | December 2009 | Michael Novak
Posted on Wed Jan 18 2012 05:54:41 GMT-0800 (Pacific Standard Time) by stfassisi
http://www.freerepublic.com/focus/f-religion/2834364/posts
United States Conference of Catholic Bishops website page dealing with Issues and Actions. This site is quite revealing on the stance of the Catholic church's positions on climate change, unions, immigration,equality, etc. It sure sounds like they prefer a more socialist position to me.