In fighting antisemitism, Jews can be our own worst enemies. We shouldn't be.

(JTA) — Unless you have been living under a rock for the past few weeks, and even if you’re not Jewish, you can’t miss the fact that antisemitism is back in the news again: Kanye West, Kyrie Irving, Nick Fuentes; extremists returning in droves to Twitter; President Donald Trump kowtowing to antisemites over dinner at Mar-A-Lago; “Saturday Night Live” opening with a monologue trafficking in antisemitic tropes; members of the Black Hebrew Israelites intimidating Jewish fans coming to Barclays Center, and an endless feedback loop of antisemitism coursing across social media.

Coming at a time when...