(FILES) This file photo taken on February 21, 2016 shows Chairman, chief executive, and co-founder of the social networking website Facebook Mark Zuckerberg speaks during a press conference presenting Samsung's new Galaxy 7 mobile device, on the eve of the official opening of the Mobile World Congress in Barcelona. Zuckerberg meets May 18, 2016 with leading US conservatives to try to head off a storm over allegations that the social network suppressed right-leaning political viewpoints. Zuckerberg proposed the meeting after technology news outlet Gizmodo last week reported allegations that Facebook was deliberately omitting articles with conservative viewpoints from a sidebar that lists popular stories. Facebook has denied the allegations, reportedly made by a former employee. / AFP PHOTO / LLUIS GENELLUIS GENE/AFP/Getty Images
