An emcee invites the audience to recite “The edge of Allegiance” -- a rearrangement of the words of “The Pledge of Allegiance.” What is the source of aggression in the United States? The artist, who is not seen and does not speak, serves as a catalyst. The audience serves as not just the experiencer of art, but also the doer. Performance: Friday, April 4, 2008, 7:00 p.m., Contaminate 3: Live Art Festival of Performance, Sound, and Video, sponsored by TEST Performance and The Present Tense, Boston, MA.