People hold candles as they mourn inside the burned trade union building in the southern Ukrainian city of Odessa on May 4, 2014. Flowers, candles and photos of the dead pile up outside a charred building in the scenic Ukrainian port city of Odessa where anger simmers a day after brutal clashes claimed 42 lives. Clashes intially broke out between pro-Russian militants and supporters of Ukrainian unity that quickly turned deadly. Several combattants, reportedly mainly on the pro-Russian side, barricaded themselves in the trade union building, which was set on fire as both sides traded petrol bombs.  AFP PHOTO/ ANATOLII STEPANOV        (Photo credit should read ANATOLII STEPANOV/AFP/Getty Images)