In their article titled ' Exclusive: Group chat messages show school shooter obsessed with race, violence and guns,' CNN reports: "During one of the anti-Semitic rants in the chat, Cruz spoke of his birth mother, saying, "My real mom was a Jew. I am glad I never met her." "...Cruz hated Jews because he believed they wanted to destroy the world."
You can read the rest here:
https://www.cnn.com/2018/02/16/us/exclusive-school-shooter-instagram- group/index.html