OAKLAND, Calif. - The family of a college student from the East Bay who was shot and killed in Oakland during a graduation celebration is asking for help.Police say they don't have a motive for the killing of Zavier Patton of Hayward.His sister, Krystal King, says she couldn't have asked for a better brother.She says the 19-year-old was studying computer science in college and that he was a role model to his young nephews and others."He was really active, smart, wise," says King.Zavier's family shared with KTVU video of him moving into his dorm at California State University Northridge one year ago as he started his freshman year of college.AdvertisementHe came back home to the East Bay to live with his sister because of the pandemic."Every.