A pedestrian walks past graffiti that has been amended to read “IRA are done. Defeated Army” instead of “IRA undefeated Army” in the Creggan area of Derry (Londonderry) in Northern Ireland on April 20, 2019 close by the scene where a journalist was fatally shot amid rioting on April 18. – Two teenagers have been arrested over the killing of journalist Lyra McKee shot dead in Northern Ireland, police said on April 20, after a murder that has triggered international condemnation. (Photo by Paul Faith / AFP)