ALISO VIEJO, Calif.—Residents and patients are mourning Dr. John Cheng outside of his office in Aliso Viejo, California, with flowers and hand-written letters commemorating the compassion and selflessness he embodied throughout his life, which was cut short by a May 15 mass shooting at a church in the neighboring city of Laguna Woods.

Law enforcement officials respond to a shooting at Geneva Presbyterian Church in Laguna Hills, Calif., on May 15, 2022. John Fredricks/The Epoch Times