Jerry Seinfeld.NBC/Getty ImagesJerry Seinfeld delivered the graduation speech at Duke University on Sunday.A video on X showed students walking out during his speech waving Palestinian flags. Seinfeld has spoken publicly in defense of Israel during its war in Gaza.Duke University graduates walked out during Jerry Seinfeld's commencement speech on Sunday, highlighting how American universities remain a political battleground.A 25-second video shared to X showed students standing from their seats and walking out of Wallace Wade Stadium as Seinfeld, 70, took the stage.