Prosecutor Tells Jury the Killing of Teen at a Texas Track Meet Was Murder, Not Self-Defense: A 17-year-old boy was fatally stabbed by a competitor in a “sneak, surprise attack” at a Texas high school track meet, a prosecutor told jurors Thursday, as a trial opened in a case that stunned an affluent Dallas suburb where the pair attended school. #Texas #JusticeForTeens #TrackMeetTragedy #MurderTrial #HighSchoolSafety