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The artwork consists of a series of LED-illuminated plastic panels, each of which displays one letter of the alphabet. Performers, known as "holders of the light," assemble in a line with each person holding one letter. OLB performances present timely messages or political slogans. The Overpass Light Brigade performs at night to increase visibility. Members typically make arrangements for performances and disseminate documentation via social media platforms.Hall manufactures the panels in his shop. He describes his process on the Daily Kos blog to encourage others to use the group's tactics. Photographs taken by Brusky and collaboratively-produced videos are distributed by the group members and fans on the Internet. Brusky joined Hall and Moline in March 2012, to help with social media and the live-streaming of bridge actions.The Overpass Light Brigade often organizes its nighttime demonstrations on bridges and highway overpasses. It also mobilizes members to participate in political rallies and vigils.  Actions have included collaboration with national labor advocates regarding Walmart's labor practices, the Chicago Teachers Union (CTU) strike, environmental advocacy with organizations such as 350.org and Global Climate Convergence, and social justice causes, including police violence, indigenous rights and related issues. Appearances have also included picketing with striking Palermo's Pizza workers, a pedestrian bridge to the Milwaukee Art Museum, an event with Nuns on the Bus, and vigils mourning the 2012 Wisconsin Sikh temple shooting and the Boston Marathon Bombing.
Wisconsin Sikh temple shooting Nuns on the Bus Palermo's Pizza Teacher Milwaukee Art Museum 2012 Wisconsin Sikh temple shooting performance Milwaukee LED social media live-streaming Daily Kos Wisconsin