The graffiti tagged on the wall of a house in the Iraqi city of Mosul, July 26, 2014. It reads in Arabic : 'Real estate property of the Islamic State (IS)'. (AFP/Getty Images)
An Iraqi woman displaced from the city of Fallujah carries a child at a newly opened camp where hundreds of displaced Iraqis are taking shelter in Amriyat al-Fallujah on June 27, 2016, south of Fallujah. (AHMAD AL-RUBAYE/AFP/Getty Images)
The Trevi fountain is illuminated in red to symbolize blood of persecuted Christians around the world, on April 29, 2016 in Rome. (GABRIEL BOUYS/AFP/Getty Images)