Sci Fi: There Is No Anti Memetics Division (fixup of some self published stuff on a site called SCP). Central concept: idea monsters.

Also by her, in the same vein but even cozier, "A Psalm For The Wild-Built" and "A Prayer For The Crown Shy".

Another "In Plain Sight", please and thank you

Not this one?
en.wikipedia.org/wiki/Medium_...

The text on the arch reminds me of the Toynbee tiles.
en.wikipedia.org/wiki/Toynbee...

To be fair, anecdotally, since the bollards were installed I've seen no cars parked back there overnight; there were 3-4 most days this summer / fall. I'd never seen people camping at that lot with any regularity before this year (based on 10+ years of bike commuting that route off and on).