Pope Francis visited a memorial to the Armenian genocide on Saturday during his trip to the country. Joined by Armenian President Serzh Sarkisian, the pontiff laid a wreath and participated in a prayer. It is believed that Ottomans killed as many as 1.5 million Armenians in the run-up to World War I. "I pray here, with pain in my heart, that such tragedies will not happen again, that humanity does not forget and knows how to overcome evil with good," the pope wrote in a commemoration book. By calling it a genocide, Francis is sure to anger Turkey, which refuses to use that word to describe it.