ultras
fanatical football fans
hooligan
participant in hooliganism
Ukrainian ultras
ultras groups in Ukraine
Northern Brigades
ultra group
Inter City Firm
West Ham United FC fanbase from late 1970s to early 1990s
Fossa dei Leoni
was an association of ultras supporters of Italian football club A.C. Milan, which dissolved in 2005
Green Brigade
Celtic F.C. supporter ultra group
barra brava
organized supporters' groups of football teams in Argentina
La Guardia Imperial
Argentine football barra brava