Hundreds, if not thousands, of Twitter users, many of them high-profile, were hacked Tuesday by someone who appeared to support Turkey in its diplomatic row with the Netherlands. Their accounts displayed a Swastika -- reversed to face to the right -- as well as the Turkish flag and hashtags to the Nazialmanya and Nazihollanda accounts, which displayed comments on the attack. The hackers included a reference to April 16, when Turkey will hold a referendum to give President Recep Erdogan more power.