Dozens of students graduating from Duke University in the US staged a walk-out ahead of a speech due to be given by comedian Jerry Seinfeld, who has taken a staunch pro-Israeli stance since the start of the deadly war in Gaza. Video clips shared on social media showed students leaving a stadium in North Carolina, where the outdoor commencement ceremony was held as Seinfeld’s appearance was announced by university president Vincent Price. The students could be heard booing the announcement as they walked out carrying Palestinian flags and chanting: “Free Palestine”. Outside Duke’s stadium on th…