Massacres

Buddhist monks pray during a ceremony to invoke blessings on the dead and wounded from Sunday's bombings at the Kelaniya temple in Colombo, Sri Lanka, Wednesday, April 24, 2019. Sri Lanka's president has asked for the resignations of the defense secretary and national police chief, a dramatic internal shake-up after security forces shrugged off intelligence reports warning of possible attacks before Easter bombings that killed over 350 people, the president's office said Wednesday. (AP Photo/Manish Swarup)

A Pakistani woman lights candles during a vigil for the victims of bomb explosions in churches and hotels in Sri Lanka, in Lahore, Pakistan, Tuesday April 23, 2019. The death toll from the Easter Sunday bombings in Sri Lanka, rose Tuesday to more than 300. (AP Photo/K.M. Chaudary)

Relatives place flowers after the burial of three victims of the same family, who died at Easter Sunday bomb blast at St. Sebastian Church in Negombo, Sri Lanka, Monday, April 22, 2019. Easter Sunday bombings of churches, luxury hotels and other sites was Sri Lanka's deadliest violence since a devastating civil war in the South Asian island nation ended a decade ago. (AP Photo/Gemunu Amarasinghe)

FILE - A Monday, July 11, 2016 file photo of Bosnian people saying prayers in front of coffins during a funeral ceremony for the 127 victims at the Potocari memorial complex near Srebrenica, 150 kilometers (94 miles) northeast of Sarajevo, Bosnia and Herzegovina. A Bosnian Serb leader has wrongly called the 1995 Srebrenica massacre, where over 8,000 Muslim men and boys were killed by Bosnian Serb troops, "a fabricated myth." Milorad Dodik, head of Bosnia's multi-ethnic joint presidency, spoke during a conference discussing war crimes. His comments defy international court rulings that said genocide was committed in the eastern Bosnian enclave and have angered Bosnian Muslims. (AP Photo/Amel Emric, File)

Andrea Wedner, center, who was wounded at the Pittsburgh synagogue attack that killed 11 people last year, stands with others as they are acknowledged by Pennsylvania lawmakers who came together in an unusual joint session to commemorate the victims of synagogue attack, Wednesday, April 10, 2019, at the state Capitol in Harrisburg, Pa. (AP Photo/Matt Rourke)

Val Finnell, left, gives a thumbs down, as others applaud after the Pittsburgh City Council voted 6-3 to pass gun-control legislation, Tuesday, April 2, 2019, in Pittsburgh. The bill, introduced in the wake of the synagogue massacre last October, places restrictions on military-style assault weapons like the AR-15 rifle that authorities say was used in the attack that killed 11 and wounded seven. (AP Photo/Keith Srakocic)

In this March 11, 1982 photo, from left, Jan Cornelius Kuiper, director, Koos Koster, producer, Johannes Willemsen, cameraman, and Hans ter Laan, soundman walk north of the capital, San Salvador, days before they were killed in El Salvador. Calls are mounting for Col. Mario Reyes Mena, a former Salvadoran army colonel, to be brought to justice for the killings. (AP Photo)

The scene shortly after a violent attack which left at least 134 people dead and dozens more wounded, which according to witnesses was carried out by the ethnic Dogon militia who descended on Ogossogou village, Mali, early Saturday March 23, 2019. François Delattre, the president of the U.N. Security Council who spoke in Mali's capital on Saturday, condemned the massacre as an "unspeakable attack." (Tabital Pulaaku via AP)

Zaed Mustafa, in wheelchair, brother of Hamza and son of Khalid Mustafa killed in the Friday, March 15 mosque shootings reacts during their burial at the Memorial Park Cemetery in Christchurch, New Zealand, Wednesday, March 20, 2019. (AP Photo/Mark Baker)

FILE - In this Sept. 23, 1992 file photo, Bosnian Serb leader Radovan Karadzic holds a knife he said was seized from Bosnian Croat soldiers in Bosnia during a news conference in Belgrade, Yugoslavia. Nearly a quarter of a century since Bosnia’s devastating war ended, former Bosnian Serb leader Radovan Karadzic is set to hear the final judgment on whether he can be held criminally responsible for unleashing a wave of murder and destruction during Europe’s bloodiest carnage since World War II. United Nations appeals judges on Wednesday March 20, 2019, will decide whether to uphold or overturn Karadzic’s 2016 convictions for genocide, crimes against humanity and war crimes and his 40-year sentence. (AP Photo/File)