from what i know, Drughi is a group of ultras which resides in the Curva Sud. they used to be called "L'Arancia Meccanica", in other words "the Clockwork Orange" after the movie.. but because of violent insinuendo through the name they were soon forced to change their name to Drughi, after the characters of the movie. they reformed in february 2005, after their last apperance in Roma in 1996.