Activists from the Internet Party of Ukraine, dressed as Star Wars characters, hold a party congress in Kiev. The party announced that its leader 'Darth Vader' has registered as a candidate for Ukraine's May 25 presidential electionReutersLady Gaga arrives at Roseland Ballroom in New York CityGettyShow host Mark Wahlberg gets slimed on stage at the 27th Annual Kids' Choice Awards in Los AngelesReutersRugby fans wearing masks cheer during the second day of the three-day Hong Kong Sevens rugby tournamentReutersThe New Zealand team perform the Haka after winning the Cup Final between England and New Zealand during the 2014 Hong Kong SevensGettyBoca Juniors players pose with a protest banner before their Argentine first division football match against River Plate in Buenos AiresAFPPeople play football on Ipanema beach in Rio de JaneiroReutersSomeone walks past the Soldier and Sailor memorial in the Crimean port town of SevastopolReutersThe Shanghai World Financial Centre, Shanghai Tower and Jin Mao Tower are seen during Earth HourReutersA photo of the Las Vegas High Roller, which opens today. At 550 feet, it is is the highest observation wheel in the world – 8 feet higher than the Singapore Flyer and 107 feet taller than the London EyeGettyAmphibious assault vehicles of the South Korean Marine Corps throw smoke bombs as they move towards shore during a US-South Korea joint landing operation drill in PohangReutersSupporters of Turkey's Prime Minister Tayyip Erdogan turn on their mobile phones as they celebrate his election victory in front of the party headquarters in AnkaraReutersTurkey's Prime Minister Tayyip Erdogan greets his supporters with members of his family in AnkaraReutersA Palestinian woman reacts after an Israeli border police officer sprayed her with tear gas during confrontations at a Land Day protest outside Jerusalem's Old CityReutersA woman carries her crying child as she queues to receive her polling card at a voter registration centre in Kabul. The Afghan presidential elections will be held on April 5ReutersAn Afghan woman walks past a wall painted with a mural encouraging people to vote in Kandahar provinceReutersProtesters hold up a large Catalan independence flag as they demonstrate against the government's Ebro River Basin Management Plan in DeltebreReutersWeapons of victims are placed by the road as security forces inspect a bomb attack that killed two policemen and wounded three others in the province of Narathiwat, ThailandReuters