Some Orthodox Christians have a mostly positive view of Roman Catholicism and continue to hope that the schism might one day be repaired. Tensions were further heightened in 1204, when the Fourth Crusade sacked Constantinople, then the bastion of Orthodoxy, and installed a Flemish Catholic as emperor. Eastern Orthodoxy and Roman Catholicism split from one another in 1054 due to controversies over the language of the Nicene Creed and the role of the papacy. The Greek Orthodox Church is one of several autocephalous (self-governing) national churches that make up the larger communion known as the Eastern Orthodox Church. Greek Orthodox Christians make up over 97 percent. 'The pope is unacceptable in Greece! He should repent!' the priest told reporters after being removed from the scene. The Roman pontiff proceeded to a meeting with Ieronymos, the Greek Orthodox bishop of Athens, who welcomed Francis with 'honor and fraternity.' Roman Catholics make up only three percent of Greece's population, according to the National Catholic Reporter. According to The Associated Press, Francis 'appeared not to notice.' Reuters reports that the priest, who was dressed in black ecclesiastical vestments and a silver pectoral cross, shouted loudly enough for the pope to hear him. The elderly priest fell to the ground as police grabbed him, but he appeared uninjured. A Greek Orthodox priest heckled Pope Francis during his Saturday visit to Athens, shouting, 'Pope, you are a heretic!' before being led away by police.

The priests