afternoon archs building city DF Distrito Federal government Mexico on the move people street traffic abstract background black commute commuters dez pain effect graphic illustration impressionism man purple silhouettes station travel Underground urban vector walk walking woman xymonau yellow blue green pink psychology stress anonymous body count business census church clipart company concept cookie cutter copies count crowd design diversity employees figures fourteen individuality leadership meeting members men pattern pecking order pictogram population powerpoint pyramid sameness scrapbooking statistics stick figures structure symbols team texture work monotony white red harmony opposition manager odd man out