Just prior to the big Snowstorm at the end of October 2011, the NYPD infiltrated the Occupy Wall Street movement on Liberty Plaza to find out where all the power generators were located, in order to remove them by raid.

All generators, including inflammable, environmentally safe bio-fuel generators were confiscated just before the snow storm hit.

An unconscionable action on the part of the NYPD. But they didn't plan on the creativity of the movement: