They enter your consciousness, and you no longer belong to yourself. You are a piece in someone else's chess game that ends in death. You, like a zombie, pick up a rifle and aim the optical sight at the American president. Or shooting John Lennon from the crowd. Outwardly, those who lead your hand are the same as you, but they are not people, they do not know pity and mercy, they do not distinguish good from evil. To defeat them, you need to cross the line...