What is the macabre or violent incident for the raven?

In Edgar Allan Poe's poem "The Raven," the macabre incident centers around the narrator's deep sorrow over the death of his beloved Lenore. The darkness intensifies when the raven visits, symbolizing death and despair, as it repeatedly utters the Word "Nevermore." This unsettling interaction amplifies the narrator's descent into madness, highlighting themes of loss and hopelessness. The presence of the raven serves as a constant reminder of his grief and the permanence of death.