abstract
barbed
barbed wire
barrier
block up
blurry
border
close
conflict
crime
danger
dark
darkness
discrimination
dusky
escape
fence
flee
freedom
frontier
ghetto
gloomy
imprisoned
inequity
injustice
iron
jail
jailhouse
line
military
national socialism
object
prison
prisoner
protection
refugee camp
security
separate
sharp
sorrow
trespassing
was