Audience violence

In several concerts I have attended, the audience is bombarded with palpable, pummeling sounds, and the lights are shifted from the band members into the audience.
The pulsing retina attack makes the band unobservable, faded to black amidst an after-image glow sliding across your field of vision.
This obscuration of the band’s image in favor of committing soft violence to the audience feels like revenge. And it appears to have taken its toll as the audience stumbles forth from the venue, having paid to be made into twitching, blinking, deaf, and vacant fans.