A former Cornell University student has pleaded guilty to posting online threats, including of death and violence, against Jewish students on campus, the U.S. Justice Department said on Wednesday. Patrick Dai, 21, was charged late last year for making online threats against Jewish students at the Ivy League school in Ithaca, New York. U.S. government officials and civil society advocates have warned about rising threats against American Jews, Muslims and Arabs since the eruption of the Israel-Gaza war on Oct. 7.