Pope Francis doesn't endorse Marxism.
In a column he wrote for the Vatican's semi-official newspaper L'Osservatore Romano, the then-Prefect of the Supreme Tribunal of the Apostolic Signatura, American cardinal Raymond Leo Burke, who has a long-standing reputation as one of the church's most vocal conservative hard-liners, said that Francis opposed both abortion and gay marriage
 Pope Francis stated in a letter accompanying the motu proprio that emphasizing the Mass of Paul VI would bring "unity I intend to re-establish throughout the Church of the Roman Rite

