Activist and Coordinator of Separatist Movement "South-East" Detained in Kharkiv; Kernes underwent another operation; Igor Baluta: Assassination Attempt on Mayor is Advantageous for Separatists; Kharkiv Prosecutor Warns of Provocations; May 1st in Kharkov: Euromaydan is not gathered, Antimaydan announces full mobilization; The Hearing of Dolgov’s Case Postponed Again; Police Call Buttons in Kharkiv; Flash mob "For Peace! For Ukraine!".