Alva Review-Courier -

One morning near the end of her long-shot congressional campaign, 25-year-old Erin Schrode rolled over in bed, reflexively checked her cellphone — and burst into tears.

With mounting horror, she scanned a barrage of anti-Semitic emails from anonymous trolls. "Get out of my country, kike," read one. "Get to Israel to where you belong. That or the oven. Take your pick."

Included was a photograph of Schrode digitally stamped with a yellow "Jude" star, the badge that Nazis forced Jews to wear during the Holocaust.

Schrode, a Democrat and activist who would come in third in the June primary in her...