The group has relationships with other antifa ultras groups such as the supporters of FC St. Pauli, Hapoel Tel Aviv and Standard Liège.
GFC is an antifa group that builds community in Seattle with a soccer influence.
In April 2008, Moonsorrow and other performers on the folk metal festival Paganfest were accused of being Nazis, racists, and fascists from the German organizations Antifa and BIFF (Berliner Institut für Faschismusforschung).
The group Virtus Fans, founded in 2006, have a friendship with antifa supporters groups all over the world: Livorno Calcio, Ternana Calcio, Cosenza Calcio, Lanciotto, Celtic Glasgow, Wrexham, Olympique Marseille, Rayo Vallecano, FC St. Pauli, RSV Goettingen 05, TSV 1860 München and Bubi Merano (futsal).
December 8, 2001 - During one of their gigs at Teatro Piccolo in Sulmona a riot started, because of approximately 20 Antifa activists trying to stop the concert.