high

fence

barbed

blue

wire

prison

security

protection

freedom

metal

military

safety

danger

wall

zone

dangerous

steel

spiral

sky

sharp

guard

forbidden

private

iron

barrier

criminal

war

politics

limit

stop

industrial

gate

crime

closed

barbwire

background

outdoor

border

boundary

sign

horizontal

barb

razor

prohibition

gray

barricade

nobody

violence

jail