"He died trying to prevent the theft of nine tubes of toothpaste." -- an interview in today's Globe with the mother of Christian Giambrone, an 18-year-old CVS worker who was stabbed to death while confronting a shoplifter outside the store, right in the middle of the Longwood medical campus. His mom has become an activist to promote better training and workplace safety for the teens and recent immigrants who work in many retail and fast food jobs in Mass. Sigh.