barbs barbwire blue freedom hope metal Restrict restriction rust sky wire barred bars caution communicate communication control danger do not do not enter forbidden impede locked notice pipes posted prevent prevented restricted sign warning addict addiction barb barbed captive caught chain conflict death depressed depression detain enemy fear fence gate hostile hurt imprison internment jail link loneliness lonely military no trespassing out overwhelmed prison prisoner razor sad sharp slave slavery suicidal suicide trap trapped trauma war wires zone