A favorite from the spring ad campaign is this "Organize and Mobilize" poster.
Each of the posters from this series (for the NYC subway) has a different brightly-colored, textured background. This one in particular is designed to resonate with a DIY aesthetic, with its painted background and hand-stamped bees. You might have noticed the odd kerning on the word "mobilize." The larger spaces between letters as you move across the page from left to right, along with the prevalance of horizontal lines in the font, are meant to suggest motion: the very typography is springing into action.