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The casket of former first lady Barbara Bush is moved after a funeral service at St. Martin's Episcopal Church, Saturday, April 21, 2018, in Houston.

A man sits at a traffic light with two toy poodles on his motorcycle in Buenos Aires, Argentina, Saturday, April 21, 2018.

The sun cuts through the haze of flares hanging in the stand during the German first division Bundesliga football match between Hannover 96 vs Bayern Munich in Hanover, central Germany, on April 21, 2018.

Activists from the French far-right political movement Generation Identitaire (GI) and European anti-migrant group Defend Europe carry supplies during an operation titled "Mission Alpes" to control access of migrants using the Col de l'Echelle mountain pass on April 21, 2018 in Nevache, near Briancon, on the French-Italian border. A hundred Identity Generation (GI) activists blocked on April 21 the Col de l'Echelle mountain pass, a crossing point of migrants in the French Alps, to "ensure that no clandestine can return to France."

Smoke lingers over Parliament Hill as people smoke marijuana during the annual 4/20 rally on Parliament Hill in Ottawa, Ontario on April 20, 2018.

A man is pictured inside looted Ethiopian Gospal Church on April 20, 2018, as protest continued for a second day in the South African North West province capital of Mahikeng. South African police fired rubber bullets at protesters after President Cyril Ramaphosa cut short a foreign trip to deal with violent riots over alleged government corruption and poor public services. Shops were looted, roads were blocked and vehicles set alight in North West province in unrest that posed an early challenge for Ramaphosa, who came to power in February. At least 23 people were arrested and one man was reported to have died in sporadic violence that erupted this week in Mahikeng, the provincial capital.

Emiratis competitors sail a traditional dhow during the Marwah Traditional Dhow Sailing race, as part of Al-Dhafra Water Festival, off the coast of al-Mirfa beach, outside Abu Dhabi on April 20, 2018.

Students burn tyres in front of the Engineering University during clashes with riot police, within a protest against the government's reforms in the Institute of Social Security (INSS) in Managua on April 20, 2018. Two protesters and a policeman were killed in Nicaragua's capital Managua after demonstrations over pension reform turned violent in the most significant protests in President Daniel Ortega's 11 years in office, officials said Friday.

Taekwondo practitioners perform in a demonstration event outside South Korea's National Assembly building in Seoul on April 21, 2018. The event, which involved some 10,000 participants including children, was aimed at celebrating the designation of taekwondo as the country's state-sponsored martial art by the National Assembly. The event is expected to set a new Guinness world record.

Thousands of people march during a protest in in Budapest, Hungary, Saturday, April 21, 2018. Tens of thousands are taking part in a rally against the distorting media policies of Prime Minister Viktor Orban鈥檚 government and its campaign against civic groups it considers are illegitimately trying to influence political decisions.

Visitors of Vienna's Prater amusement park take a ride at 117 meter high Prater Turn carousel in Vienna, Austria on April 20, 2018.