Warning: this episode contains strong language and descriptions of violence.A few days ago, for the first time, an American jury convicted a parent for a mass shooting carried out by their child.Lisa Miller, who has been following the case since its beginning, explains what the historic verdict really means.Guest: Lisa Miller, a domestic correspondent for The New York TimesBackground reading: From New York Magazine: Will James and Jennifer Crumbley be Found Guilty for Their Son’s Mass Shooting?Mother of Michigan Gunman Found Guilty of ManslaughterA Mom’s Conviction Offers Prosecutors a New Tactic in Mass Shooting CasesFor more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.