I just read this article in the Vancouver courier about one of the odder forms of activism i have encountered (I've passed the display on Davie a couple of times).

Here in Vancouver, examples of yarn bombing pop up throughout the
city, particularly in the Strathcona neighbourhood. The most vibrant
example, however, is the Davie Street community garden fence, which now
sports a technicolour sweater.

Knit graffiti can also be used by
"craftivists" who want to get a message across in a creative and
dynamic way. For instance, a fence on the south side of Oppenheimer
Park has a large protest sign knitted in yellow plastic that was
created by a Downtown Eastside resident after the park was closed off
from the public June 15 for redevelopment. The sign reads: "An offence
against our neighbourhood."

For all its appeal, the joining of knitting and street activism reminds me of this: