Migrant children hold flowers as they stand in front of riot police officers next to a camp in the town of Diavata in northern Greece, April 6, 2019.

Horse Racing - Grand National Festival - Aintree Racecourse, Liverpool, Britain - April 6, 2019 Davy Russell celebrates winning the 5.15 Randox Health Grand National Handicap Chase Action.

A man takes part in "Patriot" obstacle race at the historical complex “Stalin's Line”, a World War Two theme park near the village of Goroshki, Belarus April 6, 2019.

A boy rides a bicycle along Athalassas Park Lake in Nicosia, Cyprus April 7, 2019.

A boy walks past portraits of well-known Soviet actors before a needlework lesson at a community centre on the eve of Mother's Day in a Siberian settlement, which was founded as a logging camp and part of the Soviet Union's Gulag prison labour system, Tugach, southeast of Krasnoyarsk, Russia November 18, 2018.

Soccer Football - FA Cup Semi Final - Manchester City v Brighton & Hove Albion - Wembley Stadium, London, Britain - April 6, 2019 Brighton & Hove Albion fans before the match.

An activist wearing a mask depicting U.S. President Donald Trump participates in a protest outside the premises of the National Migration Institute (INM) in Tapachula, Mexico April 6, 2019.

Job seekers line up at TechFair in Los Angeles, California, U.S. March 8, 2018.Image used for illustrative purpose.

Runners pass along discarded cups at a refreshment point during the Vienna City Marathon in Vienna, Austria, April 7, 2019.

Rohingya refugees play Chinlone at a refugee camp in Cox's Bazar, Bangladesh April 7, 2019.

A bridge destroyed by flood is seen in Lorestan province, Iran, April 4, 2019. Picture taken April 4, 2019. Khashayar Javanmardi/Tasnim News Agency/via REUTERS

Pigeons fly in front of a large poster of Turkish President Tayyip Erdogan in Bursa, Turkey, April 6, 2019. Picture taken April 6, 2019. REUTERS/Goran Tomasevic

Soccer Football - La Liga Santander - FC Barcelona v Atletico Madrid - Camp Nou, Barcelona, Spain - April 6, 2019 Barcelona's Luis Suarez celebrates scoring their first goal with Malcom.

A "Baby Trump" balloon floating during a protest against U.S. President Donald Trump visit to Calexico, California, as seen from Mexicali, Mexico April 5, 2019.

Riot police officers stand during clashes outside a camp in the town of Diavata in northern Greece, April 6, 2019.

A man is seen behind an Indonesia's national flag during a campaign rally of Indonesia's presidential candidate Prabowo Subianto and his running mate Sandiaga Uno at Gelora Bung Karno Main Stadium in Jakarta, Indonesia, April 7, 2019.

A member of Libyan National Army (LNA), commanded by Khalifa Haftar, is seen as he heads out of Benghazi to reinforce the troops advancing to Tripoli, in Benghazi, Libya April 7, 2019.

Jennifer Kupcho celebrates with the trophy after winning the inaugural National Women's Amateur championship at Augusta National Golf Club in Augusta, Georgia, U.S., April 6, 2019.

A man walks next to concertina wire laid across a national highway on the outskirts of Srinagar, April 7, 2019.

Participants pose for photographs as they take part in a 'Hat Walk' during London Hat Week in London, Britain April 7, 2019.