EDMOND, Okla. — Vigils took place across the nation for an Oklahoma teenager who died the day after a fight in a high school bathroom in which the nonbinary student said they were a target of bullying.Nex Benedict, a 16-year-old who identified as nonbinary and used they/them pronouns, got into an altercation with three girls in an Owasso High School bathroom who were picking on Benedict and some friends. The girls attacked Benedict for pouring water on them, the teen told police in a video…