Ключевые слова: abstract, background, barbed, barricade, barrier, black, blue, border, boundary, camp, closeup, cloud, concentration, crime, criminal, danger, dark, day, defense, democracy, detention, fence, forbidden, freedom, guard, horizontal, iron, jail, line, metal, military, old, outdoor, person, prison, private, protection, razor, safety, security, sharp, sign, silhouette, sky, steel, sunset, wall, war, wire,