People clash with riot police during a demonstration against the government's planned labor reform on April 13, 2016 in Vaulx-en-Velin, France, near the building hosting the 3rd inter-ministerial committee on equality and citizenship.
France's Richard Gasquet hits a return to France's Lucas Pouille during their tennis match at Monte-Carlo ATP Masters Series tournament, on April 13, 2016 in Monaco.
Police detain a taxi driver who, along with other cabbies, blocked a main road to protest the one day per week driving restriction in Mexico City, on April 13, 2016. Last week, under new regulations imposed after the capital experienced its worst air-quality crisis in over a decade, 40 percent of cars were ordered temporarily off the road. The anti-pollution measures run through the end of June, when the rainy season begins.
Adrian Shine, leader of the Loch Ness Project, travels on the boat towing Munin, an intelligent marine robot, at Loch Ness in Scotland on April 13, 2016.
Democratic presidential candidate and Senator Bernie Sanders greets Communications Workers of America (CWA) workers striking against Verizon in Brooklyn, New York on April 13, 2016.
President Barack Obama blows bubbles during the 2016 White House Science Fair in Washington, April 13, 2016. The bubble maker was made on a 3D printer by Jacob Leggette, 9, of Baltimore, Maryland.
Boys react during the funeral of Fathi Zaydan, a Fatah official responsible for the Palestinian camp of Mieh Mieh, after an explosion that killed him yesterday, during his funeral in Mieh Mieh Palestinian refugee camp, near the port-city of Sidon, Lebanon, on April 13, 2016.
Republican presidential candidate, Ohio Gov. John Kasich, center, visits with customers at You Scream Ice Cream in Catonsville, Md., on April 13, 2016.
Atletico's Antoine Griezmann, right, starts to celebrate after passing Barcelona's goalkeeper Marc-Andre ter Stegen, left, and scoring his side's first goal during the Champions League 2nd leg quarterfinal soccer match between Atletico Madrid and Barcelona at the Vicente Calderon stadium in Madrid, Spain on April 13, 2016.
Democratic presidential candidate Hillary Clinton laughs as the Rev. Al Sharpton walks to the podium at the 25th annual National Action Network convention in New York, on April 13, 2016.