What price a Turn of phrase?

Dailykos posts a diary recommending some counter actions to ameliorate the unhappiness of local merchants over toilet use at the Wall Street demos: OWS. It concludes with the above photo of a mural depicting a common cliche.
Thing is, carpets are dirt traps. Dirt arriving on top from boot soles, shedding animals, plants and so forth, wend their way through the warp and weft of the carpet to the floor where continued traffic turns it into an abrasive. I suspect that many a tweeny has been unjustly accused of sweeping it under the carpet when nothing more than normal activity by the occupants of the room caused the pile. No justice for the lower 99%.
--ml