 The papal encyclical <unk> <unk> discusses the relationships and mutual duties between labor and capital , as well as government and its citizens . Of primary concern was the need for some <unk> for " the misery and <unk> pressing so unjustly on the majority of the working class " . The encyclical supported the right to form unions , rejected socialism , communism and unrestricted capitalism , and affirmed the right to private property . 
