Opposites attract?

Was on the road the other day when a huge truck came beside me. Saw 2 huge stickers behind the driver's seat. One was the picture of the devil with the word "Devil" and the other was a Swastika sign. I thought it was pretty weird. It was a contradictory seeing both objects side by side. I don't know about the driver, but I would never put a "devil" behind me although the Swastika can protect.