iconic police officer silhouette: ic mid-century

police officer silhouette iconographic symbolism midcentury isotype style gerd arntz blue black white navy facial expression saturated color field precise nautical detail logo pictogram symbolic icon iconic silhouette: mid-century symbol representing type captured background showcases monochromatic minimalist portrait fields maritime scenes 1918-1939 interwar period influences elegant emotive faces depicted characterized dark tones colorized enhance visual impact