Social activist, organizer ... and FBI informant It was all about stopping violence, says Austin man who revealed alleged firebomb plot at GOP convention. By David Hanners ST. PAUL PIONEER PRESS Saturday, January 03, 2009 ST. PAUL, Minn. — In a federal courtroom in Minneapolis this month, the public transformation of Brandon Darby of Austin will become complete. In four years, he has gone from a never-trust-the-government activist to the confidential informant who helped the FBI arrest two Austin men on suspicion of building firebombs during the Republican National Convention in St. Paul in September. "I feel like, as an...