Young men compete in a punishing walking race for which there can only be one survivor, in an adaptation of a Stephen King allegory about male-dominated society. Stephen King, America’s most popular fiction writer, is an expert at writing books and stories that get adapted into films, the majority of which are horror. King’s excellence at horror I attribute, at least in part, to his frank recognition of evil as a powerful force in society. Evil in his books is something we participate in, whether we want to or not. The latest King adaptation is called The Long Walk, directed…