Born and raised in Pakistan to parents who fled neighboring Afghanistan half a century ago, an 18-year-old found himself at the mercy of police in Karachi who took his cash, phone and motorbike, and sent him to a deportation center. Scared and bewildered, he spent three days there before he was sent back to Afghanistan, a place he has never been to, with nothing but clothes on his back. The youth is one of at least 1.7 million Afghans who made Pakistan their home as their country sank deeper into decades of war.