Face Masks, Snipers and Aerial Surveillance: Chicago’s Newest Anti-Protest Measures Revealed. [Truthout] – Each time a new measure that the city of Chicago is preparing for the coming NATO and G8 summits is unveiled, the tension in the city ratchets up a notch. The latest news comes in the form of reports that Chicago has purchased face shields, and may be considering the implementation of airborne surveillance technology.