On this edition of “60 Minutes,” in the final days before the midterm elections, Republicans are attacking Democrats, and Democrats are returning fire. A lot of this is happening on social media. Bill Whitaker explores the impact social media is having on American life. Anderson Cooper examines how New York City has been dealing with the influx of migrants arriving on buses from Texas, and some of the glaring systemic problems the crisis exposed. No longer the sole province of militants and conspiracy theorists, prepping has gone mainstream. Jon Wertheim travels throughout the US and meets with preppers who are trying to ensure they are prepared for any disaster situation that may arise.