The Anti-Defamation League logged a 57 percent rise in anti-Semitic incidents in the United States in 2017, compared to the previous year — including bomb threats, assaults, vandalism, and anti-Semitic posters and literature found on college campuses…

“I’m not a Chicken Little who’s always yelling, ‘It’s worse than it’s ever been!’ But now I think it’s worse than it’s ever been,” said Deborah E. Lipstadt, professor of Holocaust history at Emory University, in Atlanta, and author of an upcoming book on anti-Semitism.

Ms. Lipstadt said she did not wish to be seen as alarmist, because in some ways “things have never been better” for Jews in America.

But she likened anti-Semitism to a herpes infection that lies dormant and re-emerges at times of stress. It doesn’t go away, no matter how “acculturated” Jews have become in America, because “it’s a conspiracy theory,” said Ms. Lipstadt, whose win at trial against a Holocaust denier in England was portrayed in the 2016 movie “Denial.”