In my teen years in London, which coincided with the wave of Palestinian terrorism of the 1970s, I had a poster on my bedroom wall. At first glance, the image looked like a packet of ring-shaped POLO mints – whose advertising slogan was “The mint with a hole.” On my poster, the brand name was replaced with the letters “PLO” and the wording read: “Mints look good with holes in them, people don’t,” accompanied by a call to ban Yasser