Walter Palmer killed Cecil the Lion with a bow to show off – and now he's discovering what it's like to be hunted

Like millions around the world, I was saddened to read that a beloved lion, called Cecil, was shot and killed by an American hunter in Zimbabwe. In 2007 I spent a couple of weeks in South Africa making a documentary about trophy hunting (Louis Theroux's African Hunting Holiday). I also wrote a short piece about the experience.