antagonism
background
barb
barbed
barbwire
barrier
border
camp
conflict
crime
crisis
danger
depression
detention
fence
fist
freedom
hand
illegally
immigration
injustice
jail
man
metal
old
opposition
poor
poverty
pressure
prison
protection
punishment
rebellion
refugees
rights
safety
security
silhouette
sky
steel
struggle
sun
symbol
violence
war
wire