After police killed an unarmed black man in his grandparents' backyard, activists set out to change California law, hoping to make it easier to prosecute police who kill. That's sparked a heated debate in the state Capitol between families who have lost loved ones to police, and law enforcement officers who face split-second decisions while performing a dangerous job. Reporter Laurel Rosenhall explores California's attempt to curb police shootings as politicians consider the nation's toughest statewide standard for justifying deadly force.