Lea este artículo en español. On opposite ends of California, two women who have never met are united by grief and purpose. This month, Kathleen Bils laid a memorial stone in a flower bed on the San Diego street where a sheriff’s deputy shot her son one year earlier. Some 500 miles north, at a marina on the eastern edge of San Francisco Bay, Addie Kitchen recently held a memorial in the city where a police officer killed her grandson. “I want people to understand that our children are important to us and that we want justice,” said Kitchen, a retired prison guard. “We want the officers to be held accountable.”