A Soviet Constructivist propaganda poster style wallpaper, bold geometric abstraction, featuring a [Worker/Peasant/Soldier/Factory/Steam Locomotive/Futuristic City] in dynamic diagonal composition. Color palette is strictly Red, Black, White, and Gray. Strong graphic elements with photomontage effect, angular lines, dynamic diagonal composition, overlapping bold geometric shapes (circles, triangles, lines). The background is a bright red banner or abstract shapes, with dramatic diagonal lines. High resolution, 8k, wallpaper aspect ratio 16:9, clean edges, vector graphic style, minimalist, functionalist art.