As news of #AlexeiNavalny's death spread, spontaneous memorials took place in several urban areas, with people taken into custody in 36 cities from the border city of #Belgorod to #Vorkuta, an Arctic mining outpost once a centre of the Stalin-era gulag labour camps, to #NizhnyNovgorod, #Krasnodar, #RostovOnDon and #Tver. #Ukraine