The driving life and death of Philando Castile

Valerie Castile, mother of Philando Castile, looks at a photo button of her son during a press conference on the state Capitol grounds in St. Paul, Minn., on Tuesday. Philando Castile was fatally shot by police July 6.
Valerie Castile, mother of Philando Castile, looks at a photo button of her son during a press conference on the state Capitol grounds in St. Paul, Minn., on Tuesday. Philando Castile was fatally shot by police July 6.