> A man paced in front of the advertisement, chanting to himself. “This . . . is . . . necessary! This . . . is . . . necessary!” On each “necessary” he swung his arms up in exaltation.

Tangential, but this sounds an awful lot like Disgustipated (‘The Cries of the Carrots’) a ‘hidden’ song on the Tool album Undertow, including the exaltation part: the narrator of the song is a preacher.