An abandoned tower looms 18-stories into the sky. Zombie-like bodies with blank stares shake and stumble about aimlessly as a corpse lies on the cold, blood-stained pavement. Dangerous criminals wielding weapons indiscriminately shoot firearms and swing knives and machetes. Deadly potions are passed around, and sharp needles poke up from the ground. Armed guards patrol the premises as surveillance cameras watch every move. This morbid scene isn’t the backdrop of a Halloween haunted house. It’s a real life scary situation outside of the Speaker Nancy Pelosi Federal Building in San Francisco. The conditions are so frightening, federal employees have been...