 Aspects of GMAC's proposed tactical reforms were field tested with some success at the Festival De La Pueblo 5 May action in Boston in 2002, and the siege of the Lewiston Armory (in opposition to a failed neo-Nazi organizing meeting), Maine, 2003.While the collective was influential in better defining basic best practices concerning the Black Bloc tactic, and ultimately reached a receptive intercontinental audience of fellow travelers, a number of its recommendations continue to be met with some controversy in aspects of the anarchist community.GMAC published a book on the Black Bloc in 2002; "The Black Bloc Papers