A definition of antisemitism that harms Jews

(JNS) — The Mishnaic sage Rabbi Shimon Bar Yochai spoke 18 centuries ago about a group of people in a boat. One of the passengers brandished a hand drill and began to drill a hole under his seat. When the others panicked, he asked why they would care if he confined his drilling to the space where he sat. To his fellow passengers, the answer was obvious: He was causing the entire boat to sink.

Last week, the White House released its unprecedented U.S. National Strategy to Counter Antisemitism. There is much to commend in this comprehensive strategy, including measures to bolster the security of...