By Oni Oviri Londoners are living through a real-time horror story where criminals act with impunity, the police are powerless and taxpayers foot the bill. The responsibility lies with Sadiq Khan – tomorrow, don’t vote for a sequel, urges Oni Oviri London Has Fallen. But instead of a popular action thriller we are watching a real time political horror story unfold. The main protagonist is Sadiq Khan, the Labour London Mayor who, after two terms, has overseen the transformation of the capital into a crime-ridden cesspit. Or at least it feels that way for those of us who live and work here. Just…