Nothing escapes the event horizon. The area surrounding the event horizon still hosts extremely strong gravitational fields in a comparatively small volume, so it's a source of extreme events. Including superheated accretion disks which glow very brightly, strong magnetic fields, and axial jets of high energy plasma and particles. But all of these phenomena occur outside of the event horizon. People say that the jets come "from the black hole" though it's more accurate to say that they come from near the black hole, it's just the nature of language.