When 'Washington Post' correspondent Souad Mekhennet chooses to go and conduct an interview, it can be a life or death decision. She’s spent much of the past 15 years reporting on Islamic extremist groups, and she’s interviewed leaders of Al Qaeda, the Taliban and ISIS. Mekhennet was raised as a Muslim in Germany. Her new memoir is 'I Was Told to Come Alone.' Linguist Geoff Nunberg says people have been complaining about the overuse of the exclamation since Victorian times, but he thinks the exclamation point gets a bad rap.