KHARKIV, UKRAINE - APRIL 22: Nikolai Prohorenko visits the grave of Vladislav Zubenko, who died after being shot during the Euromaidan protests in Kiev in February, on what would have been his 23rd birthday on April 22, 2014 in Kharkiv, Ukraine. Following turbulence with the central government, pro-Russian activists have been occupying government buildings and demanding greater autonomy in many Eastern Ukrainian cities in recent weeks. (Photo by Brendan Hoffman/Getty Images)