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architecture
barrier
blur
building
camp
captive
captivity
cell
city
clock
close
communism
concentration
dark
door
eastern
europe
extermination
fence
flashback
freedom
gate
genocide
guard
hand
history
human
iron
isolation
jail
lattice
light
lock
montage
old
padlock
persecution
prison
prisoner
rays
shadows
shutters
silhouette
soldier
soviet
time
torture
union
wall
window