Need a gas mask? Whether you want one for practical purposes or cosplay needs, this week's "Best of Craigslist" has the information you need.

That poster, as seen below, bore the following message for MTA passengers beneath a transit-style icon depicting a man in a gas mask: The NYPD will release small amounts of harmless, colorless gas ...

The gas masks were created purely as an art project to highlight the underlying societal climate that demands consumption, and not an official collaboration of any sorts.