Democratic presidential candidate and former Texas congressman Beto O'Rourke, greets his daughter Molly, 10, son Ulysses, 12, and son Henry, 8, as he arrives at his presidential campaign kickoff in El Paso, Texas, Saturday, March 30, 2019. (Photo by Gerald Herbert/AP Photo)





Muna Hussaini listens to Democratic presidential candidate and former Texas congressman Beto O'Rourke speak during a presidential campaign rally kickoff on Saturday, March 30, 2019, in Austin, Texas. (Photo by Kick Wagner/Austin American-Statesman via AP Photo)





A woman holds her ballot before casting at a polling station during the presidential election in Kiev, Ukraine, Sunday, March 31, 2019. Ukrainians choose from among 39 candidates for a president they hope can guide the country of more than 42 million out of troubles including endemic corruption, a seemingly intractable conflict with Russia-backed separatists in the country's east and a struggling economy. (Photo by Sergei Grits/AP Photo)





A supporter of Yulia Tymoshenko, leader of opposition Batkivshchyna party and presidential candidate, reacts at her last campaign rally in central Kiev, Ukraine, March 29, 2019. (Photo by Vasily Fedosenko/Reuters)





Buyan, a male Siberian brown bear, chooses a pumpkin with a photograph of candidate Petro Poroshenko while attempting to predict the winner of the Ukrainian presidential election during an event at the Royev Ruchey Zoo in Krasnoyarsk, Russia March 28, 2019. (Photo by Ilya Naymushin/Reuters)





Brexit Party leader Nigel Farage attends a March to Leave demonstration in London, Britain March 29, 2019. The protest march which started on March 16 in Sunderland, north east England, finishes on Friday March 29 in Parliament Square, London, on what was the original date for Brexit to happen before the recent extension. (Photo by Toby Melville/Reuters)





A man walks by a Turkish flag and a poster showing the Turkey's President Recep Tayyip Erdogan with a boy in Ankara, Turkey, Sunday, March 31, 2019. Turkish citizens have begun casting votes in municipal elections for mayors, local assembly representatives and neighborhood or village administrators that are seen as a barometer of Erdogan's popularity amid a sharp economic downturn. (Photo by Ali Unal/AP Photo)





An official female shows the ballot voting paper with names and the parties a polling station during the municipal elections in Ankara, Turkey, Sunday, March 31, 2019. Turkish citizens have begun casting votes in municipal elections for mayors, local assembly representatives and neighborhood or village administrators that are seen as a barometer of Erdogan's popularity amid a sharp economic downturn. (Photo by Burhan Ozbilici/AP Photo)





Presidential candidate Zuzana Caputova hugs with a supporter after acknowledging the first preliminary results of the second round of the presidential election in Bratislava, Slovakia, Saturday, March 30, 2019. Voting has ended in the runoff of Slovakia's presidential election, and early results show a favorite female candidate in a lead. (Photo by Petr David Josek/AP Photo)





Her face painted in the colors of the national flag, a supporter of opposition leader Juan Guaido, Venezuela's self-proclaimed interim president, waits for his arrival in Los Teques, Miranda State, Venezuela, Saturday, March 30, 2019. Guaido addressed the crowd while Maduro loyalists gathered for what was billed as an “anti-imperialist” rally in the capital. Such dueling demonstrations have become a pattern in past weeks as Venezuela's opposing factions vie for power in a country enduring economic turmoil and a humanitarian crisis. (Photo by Natacha Pisarenko/AP Photo)





Supporter of India's ruling Bharatiya Janata Party (BJP) wearing masks of Prime Minister Narendra Modi attend an election campaign rally addressed by Modi at Moran town in the northeastern state of Assam, India, March 30, 2019. (Photo by Anuwar Hazarika/Reuters)





A woman demonstrates against the World Congress of Families, in Verona, Italy, March 30, 2019. (Photo by Yara Nardi/Reuters)





A masked protester waves his national flag near the fence of the Gaza Strip border with Israel, marking first anniversary of Gaza border protests east of Gaza City, Saturday, March 30, 2019. Tens of thousands of Palestinians gathered Saturday at rallying points near the Israeli border to mark the first anniversary of weekly protests in the Gaza Strip, as Israeli troops fired tear gas and opened fire at small crowds of activists who approached the border fence. (Photo by Adel Hana/AP Photo)





A Palestinian woman reacts after inhaling tear gas fired by Israeli forces during a protest marking Land Day and the first anniversary of a surge of border protests, at the Israel-Gaza border fence, in the southern Gaza Strip March 30, 2019. (Photo by Ashraf Abu Amrah/Reuters)





A demonstrator with a Palestinian flag takes cover from Israeli gunfire and tear gas during a protest marking Land Day and the first anniversary of a surge of border protests, at the Israel-Gaza border fence east of Gaza City March 30, 2019. (Photo by Mohammed Salem/Reuters)





A fire eater performs during the Earth Hour celebrations in La Paz, Bolivia, Saturday, March 30, 2019. Earth Hour takes place worldwide and is a global call to turn off lights for 60 minutes in a bid to highlight the global climate change. The Earth Hour was started in Australia in 2007, which has become a global event. (Photo by Juan Karita/AP Photo)





Activists of the World Wide Fund For Nature (WWF) write the words 'Earth Hour' with led-lights in front of the blacked out Brandenburg Gate to mark Earth Hour, in Berlin, Saturday, March 30, 2019. The global event Earth Hour is the symbolic switching off of the lights for one hour to help minimalize fossil fuel consumption as well as mitigate the effects of climate change. (Photo by Markus Schreiber/AP Photo)





Lights are off for the global Earth Hour at the 14th-century red brick St. Mary's Basilica in the southern Renaissance city of Krakow, Poland, Saturday, March 30, 2019. The Earth Hour gesture calls for greater awareness and more sparing use of resources, especially fossil fuels. (Photo by Czarek Sokolowski/AP Photo)





Philippine Boy Scouts play with their flashlights at the countdown for the 12th Earth Hour event Saturday, March 30, 2019 in suburban Makati city east of Manila, Philippines. Earth Hour is the symbolic switching off of the lights for one hour to help minimize fossil fuel consumption as well as mitigate the effects of climate change. (Photo by Bullit Marquez/AP Photo)





A man uses a chair to cover himself from the rain as he waits for the arrival of Pope Francis at the Hassan Tower esplanade in Rabat, Morocco, March 30, 2019. (Photo by Youssef Boudlal/Reuters)