By Marielena Castellanos Mario A. Cortez | La Prensa San Diego Under a hot sun last Sunday, a group of protestors marched through the streets of Nestor calling for justice and accountability from the police. The march and a rally that followed were organized by the family of Raul Rivera, who suffered from mental illness and was fatally shot by police back in May of this year. A statement from the San Diego Police Department said he allegedly refused to drop a knife when confronted by police. Rivera’s family has raised questions about Raul’s death. They believe police officers could have prevented it. An investigation is underway.