While carrying a weapon, a routine traffic stop can turn deadly if you don't know what to say. Just look at the case of Philando Castile in Minnesota. Massad Ayoob has experience on both sides of a traffic stop. Mas explains why officer Jeronimo Yanez was acquitted of all charges. He examines all the mistakes that Mr. Castile made that cost him his life. Understanding the correct terminology and proper movements during a traffic stop could keep you alive.