Nicolás Maduro has been the president of Venezuela since 14 April 2013, when he won the second presidential election after Chávez's death, with 50.61% of the votes against the opposition's candidate Henrique Capriles Radonski, who had 49.12% of the votes. The Democratic Unity Roundtable contested his election as fraud and as a violation of the constitution. An audit of 56% of the vote showed no discrepancies, and the Supreme Court of Venezuela ruled that under Venezuela's Constitution, Nicolás Maduro was the legitimate president and was invested as such by the Venezuelan National Assembly (Asamblea Nacional). Opposition leaders and some international media consider the government of Maduro to be a dictatorship. Since February 2014, hundreds of thousands of Venezuelans have protested over high levels of criminal violence, corruption, hyperinflation, and chronic scarcity of basic goods due to policies of the federal government. Demonstrations and riots have resulted in over 40 fatalities in the unrest between Chavistas and opposition protesters and opposition leaders, including Leopoldo López and Antonio Ledezma were arrested. Human rights groups condemned the arrest of Leopoldo López. In the 2015 Venezuelan parliamentary election, the opposition gained a majority.