The shooting death of Philando Castile in a St. Paul suburb last week started out as a police traffic stop for a broken taillight. [Fatal police shooting in Minnesota sparks protests across country] It’s a familiar refrain when it comes to officer-involved shootings that result in the deaths of black men and women around the country: A traffic stop – a seemingly routine interaction between police and civilians – swiftly escalates to a lethal altercation. [Philando Castile was stopped…