Photos of the day - April 29, 2016

Children peer from a carriage at a train station turned into a makeshift camp crowded by migrants and refugees, at the northern Greek border point of Idomeni, Greece, April 29, 2016. Many thousands of migrants remain at the Greek border with Macedonia, hoping that the border crossing will reopen, allowing them to move north into central Europe. (Gregorio Borgia/AP)

A former circus lion is seen at the El Dorado Airport in Bogota, Colombia, on April 29, 2016. Nine former circus lions will be taken to the Emoya Big Cat Sanctuary in South Africa where ADI (Animal Defenders International) officials said they will enjoy natural enclosures with drinking pools, platforms and toys. (John Vizcaino/Reuters)

Police in riot gear hold back demonstrators against U.S. Republican presidential candidate Donald Trump outside the Hyatt hotel where Trump was set to speak at the California GOP convention in Burlingame, Calif., on April 29, 2016. (Noah Berger/Reuters)

Ferrari driver Sebastian Vettel of Germany steers his car during the second free practice at the Sochi Autodrom Formula One circuit in Sochi, Russia, April 29, 2016. (Pavel Golovkin/AP)

A burned-out house is surrounded by charred ground and trees following a natural gas explosion at a pipeline complex on April 29, 2016, in Salem Township, Pa. The explosion caused flames to shoot above nearby treetops in the largely rural area, about 30 miles east of Pittsburgh, and prompted authorities to evacuate businesses nearby. (Keith Srakocic/AP)

Members of a veterans’ motorcycle club stand holding flags that flap in the breeze outside a memorial service for U.S. Marine Cpl. Christopher Orlando outside St. Paul’s Catholic Church in Hingham, Mass., on April 29, 2016. Orlando and 11 other Marines died on Jan. 14 in a midair collision of two helicopters during a nighttime training mission off Hawaii’s coast. (Charles Krupa/AP)

Pilots of the British aircraft aerobatics team Global Stars show their flying skills during the inauguration of three-day air show in Ahmedabad, India, on April 29, 2016. The three-day air show was the part of the Gujarat state Foundation Day celebrations. (Ajit Solanki/AP)

Republican presidential candidate Sen. Ted Cruz, R-Texas, accompanied by vice-presidential candidate Carly Fiorina, speaks during a campaign stop at the Indiana War Memorial on April 29, 2016, in Indianapolis. (Darron Cummings/AP)

A sign is seen as taxi drivers protest against Uber Technologies Inc. in Lisbon, Portugal, on April 29, 2016. (Rafael Marchante/Reuters)

Orthodox priests carry a shrouded figure of a crucified Jesus Christ during a ceremony reenacting Jesus Christ’s deposition from the cross on Good Friday at Penteli monastery, north of Athens, Greece, on April 29, 2016. (Michalis Karagiannis/Reuters)

U.S. Vice President Joe Biden talks with Pope Francis in Paul VI Hall at the Vatican on April 29, 2016. (Max Rossi/Reuters)

A man reacts as he stands on bloodstains at a site hit by airstrikes in the rebel held area of Aleppo’s al-Fardous district, Syria, on April 29, 2016. (Abdalrhman Ismail/Reuters)

Arabic writing on a wall says “Aleppo is burning” in a rebel-held area of Aleppo, Syria, April 29, 2016. (Abdalrhman Ismail/REUTERS)

A Kashmiri-masked Muslim protester jumps in the air to avoid stones thrown at him by Indian police during a protest in Srinagar, Indian-controlled Kashmir, April 29, 2016. Government forces fired tear gas and pellet guns to stop rock-throwing Kashmiri youths after Friday prayers. The demonstrators were responding to a protest call by anti-India separatist leaders against, what they said, government’s failure to arrest the troops involved in the recent killing of five civilians following an alleged molestation of a teenage girl student by an Indian soldier. (Dar Yasin/AP)

Audi employees warm up around a fire in a barrel during a rally at the factory of the automaker in Ingolstadt, Germany, April 29, 2016. Workers in the metal and electrical industry have begun nationwide strikes at night on April 29. In several workplaces, employees will temporarily stop working during the day, according to German metalworkers’ union IG Metall. Strikers demanded for a pay increase of five percent for 3.8 million employees in the sector. (Andreas Gebert/EPA)

A mother and her daughter take a souvenir photo with the squirrel character from the movie “Ice Age” during the Bangkok Comic Con in Bangkok, Thailand, April 29, 2016. (Diego Azubel/EPA)

Orthodox Christians light candles in the garden of St. Kliment’s church on Good Friday, in Skopje, the former Yugoslav republic of Macedonia, April 29, 2016. (Georgi Licovski/EPA)

Disabled protesters confront police blocking them from reaching the National Palace, where Bolivia’s President Evo Morales has his offices, as they demand an increase in state benefits for people with disabilities in La Paz, Bolivia, April 29, 2016. The demonstrators began their march by foot to the capital, leaving Cochabamba on March 21. They are asking the government increase their disability compensation to 500 Bolivianos, or about $73, per month. (Juan Karita/AP)

Storks stand in their nests on top of chimneys in Rust am See, some 74 kilometers southeast of Vienna, Austria, April 29, 2016. A total of 17 pairs of storks were counted, rearing 33 young storks, in Rust am See in 2016. (Christian Bruna/EPA)

A worker plays a trumpet during a protest against skyrocketing consumer prices and job cuts in Buenos Aires, Argentina, April 29, 2016. Thousands of state employees have been fired since Argentina’s President Mauricio Macri came to power in December with promises to cut spending. The protest was staged ahead of Sunday’s May 1 Labor Day. (Natacha Pisarenko/AP)

An image made with an extreme wide-angle lens shows a general view of Bangkok as seen from Benjakiti Park, Thailand, April 29, 2016. An extreme heat wave is affecting parts of Thailand, health officials said. The dry season in Thailand usually begins in November and the heat typically tapers off in May, when monsoon rains are expected. (Sara Houlison/EPA)

History enthusiasts dressed in WWII U.S. Army uniforms salute as the national anthem of the United States plays during the “Convoy of Liberty” event on April 29, 2016, in Prague, Czech Republic. The “Convoy of Liberty'”commemorates the 71st anniversary of the liberation of the western part of the Czech Republic by the U.S. Army from Nazi oppression in 1945. The convoy’s route begins on the bank of Vltava river in Prague and makes its first stop in front of the U.S. embassy, where it will be met by the Czech Army Military Band. (Matej Divizna/Getty Images)

Riders pass a church at the start of the first stage of the 2016 Tour de Yorkshire, from Beverley to Settle, on April 29, 2016, in Beverley, England. (Bryn Lennon/Getty Images)