We are all reeling from the brutal kidnapping and murder of Rabbi Zvi Kogan (28), of blessed memory -- a chilling reminder that antisemitism can strike anywhere, and has become alarmingly normalized worldwide. Amidst the horror, a unique kind of pain emerges. Rabbi Zvi wasn't just anyone; he was a Chabad shaliach (emissary). Together with his wife Rivky, he embraced the Lubavitcher Rebbe's mission to illuminate the world.