Ключевые слова: area, background, barb, barbed, barbed tape, barbed wire, barbwire, barrier, border, boundary, closed, concept, confrontation, control, crime, criminal, crisis, danger, economic, escape, fence, forbidden, freedom, guard, incarcerated, jail, justice, law, metal, prison, prisoner, protect, protection, punishment, razor, safety, security, sharp, sky, steel, wall, wire, wire fencing,