Lebanese Armenian boys, their faces painted with colors of the Armenian flag, attend a rally marking the 98th anniversary of massacres on thousands of Armenians, in Beirut, Lebanon. Armenian communities around the world mark the killing of up to 1.5 million Armenians, on April 24 each year with marches, vigils and rallies to demand recognition from the world community, and reparations from Turkey. Bilal Hussein/AP
A North Korean boy on rollerblades is pulled by a woman on a bicycle, on a road south of Kaesong, North Korea and north of the demilitarized zone which separates the two Koreas. David Guttenfelder/AP
Photographers take pictures of a work of art entitled 'House of Treasures' by Chinese artist Cao Fei, which is part of an exhibition called 'Mobile M+: Inflation!' at the waterfront of West Kowloon Cultural District in Hong Kong. Vincent Yu/AP
A transgender person wearing white saree reacts to the camera during the annual eunuch festival at Koovagam village, in the southern Indian state of Tamil Nadu. Transgenders and transvestites gather in the village every year to participate in the reenactment of the tale of Indian epic Mahabharata, in which they play the bride of warrior god Aravan and later mourn his death through ritualistic dances, according to a villager. Babu/Reuters
Tulips are seen on Capitol Hill in Washington. Carolyn Kaster/AP
A worker is seen through an art piece 'Poetic Cosmos of the Breath' by Argentina-born artist Tomas Saraceno as part of an exhibition 'Inflation!' at the site of an upcoming park in the West Kowloon cultural district in Hong Kong. Bobby Yip/Reuters
Joseph H. Horn, whose legal name is Superman J.H. Horn, walks down to the field at US Cellular Field before a baseball game between the Chicago White Sox and the Cleveland Indians in Chicago. Charles Rex Arbogas/AP
An Indian brass band participates in a procession on the occasion of Mahavir Jayanti, a religious festival celebrated by Jains to commemorate the birth anniversary of Lord Mahavira, in New Delhi, India. Mahavira, is the last of twenty-four Teerthankaras (Jain Prophets) and has been acclaimed as one of the supreme teachers and a social reformer. Tsering Topgyal/AP
People and rescuers gather after an eight-story building housing several garment factories collapsed in Savar, near Dhaka, Bangladesh. Dozens were killed and many more are feared trapped in the rubble. A.M. Ahad/AP
A Massachusetts State Trooper salutes during the memorial service for Massachusetts Institute of Technology police (MIT) officer Sean Collier at MIT in Cambridge, Massachusetts. Collier was allegedly killed by the brothers accused of the Boston Marathon bombings, Dzhokhar and Tamerlan Tsarnaev. Brian Snyder/Reuters
Marta Bucurestean watches television after waking up at her family's hut in the Romanian gypsy settlement of 'El Gallinero,' on the outskirts of Madrid. More than 400 Romanian gypsies live in precarious conditions, without running water or sewage services, in 'El Gallinero,' just 9 miles away from Madrid's center. Susana Vera/Reuters
Kashmiri Muslims pray inside the shrine of Sakhi Zain-ud-din Wali, a Sufi saint, during an annual torch festival in Aishmuqam, about 47 miles south of Srinagar. Thousands of Kashmiri Muslims who believe in Sufism throng to the shrine of Wali to celebrate the annual torch festival which symbolises the end of the long winter and the beginning of the new sowing season. Danish Ismail/Reuters
U.N. Secretary-General Ban Ki-moon said that the attack, carried out against rebel-held territory, may amount to a war crime if found to be deliberate.
BySarah El Deeb, Associated Press
U.N. Secretary-General Ban Ki-moon called on Thursday for an immediate investigation of an attack on a school in Syria's Idlib province that the U.N.'s children's agency is calling one of the deadliest of its kind in the country's six-year war.