From the Georgia Straight, original here:
Publish Date: September 25, 2008
On a covered sidewalk on West Cordova Street, where the smell of vomit
and urine hangs in the air, Ken Foster talked about what it takes to
push the boundaries of his art.
A homeless artist whose work is well known on Vancouver's Downtown
Eastside, Foster paints on materials he picks up in alleys, like
discarded construction signs.

"I'll sell it for $6, maybe, and with that buy a can of paint," Foster
related. "And so I end up doing 10 paintings before I finally get
enough supplies to make one painting that is actually pushing a
boundary of any sort, or furthering, you know what I mean, like, any
sort of importance."
When the Georgia Straight caught up with the 37-year-old street
artist, Foster's challenges were a lot greater. A Sharpie pen was all
that was left of his possessions because of the recent street sweeps by
city crews and the police on the Downtown Eastside.
"The last time, they threw out my wheelchair, $150 worth of paint,
my backpack, my ID, and I don't own anything other than what you see
right here," he said, showing the pen.
Foster recalled one incident. "They said, 'You have half an hour to get
that cleaned up; get somebody to help you move it out of here,' " he
said. "So I had gone. I came back 15 minutes later. It wasn't even half
an hour. And they had thrown it all, and they're laughing at me."
And the police who accompanied the city crew? "They're laughing at me too," Foster said.