A fabulous old live set in New York (1992) at New Music Seminar by the well known legendary collective of Detroit  Underground Resistance. Old dirty beats , traveling us back to electronics’s music history. They are the most militantly political example of techno scene in the USA , with a exception musical aesthetic and a strict anti-mainstream attitude , combining political activism with techno. You can read a full interesting article at wikipedia regarding the history of underground resistance since the beggining in the late 80s. Underground resistance remain one of the political critical mass in the US , their website address is
http://www.undergroundresistance.com/