I was seven or eight years old in the early 50’s during the “Red” scare and McCarthy and HUAC, the House Un-American Activities Comittee. I remember being asked what my favorite color was and wanted to say RED but I knew somehow that was politically incorrect. So I said Blue. Young people have no idea how pervasive the anti left propaganda was back then. In terms of graphic design its hard to beat Red and Black on white for impact.