hrmm which Popes to believe:
Pope Pius:
http://www.vatican.va/archive/aas/index_en.htm
The document, as published in the
Acta Apostolicae Sedis , bears the date July 1, 1949 and the heading
Decretum (Decree), and is presented in the form of a
dubium : that is, in question-and-answer format. It presents four questions, together with the Holy Office’s replies: (1) Is it licit to join or show favor to Communist parties? (2) Is it licit to publish, distribute, or read publications that support Communist doctrine or activity, or to write for them? (3) May Christians who knowingly and freely commit the acts in parts 1 and 2 be given the
sacraments? (4) Do Christians who profess, defend or promote materialistic Communist doctrine incur the penalty of excommunication as apostates from the Christian faith, with the penalty reserved so that it may only be lifted by the Holy See?
The fourth question is answered yes in the encyclical.
and Pope Leo:
http://www.vatican.va/content/leo-x...nts/hf_l-xiii_enc_15051891_rerum-novarum.html
so whom to believe, one who makes a mike comment in a personal opinion or two Popes who write encyclicals against it as anti catholic, one with the penalty of excommunication.