Barra brava (lit. 'fierce group') is the name of organized supporters' groups of football teams in Argentina and Brazil, analogous to European ultras and British hooligans in providing fanatical support to their clubs in stadiums and provoking violence against rival fans as well as against the police.
Actions such as exhibition of choreographies (like throwing smoke bombs, firecrackers, confetti and balloons and displaying giant flags that cover entire stands, or part of them, before the match's start) to welcome the team when it goes out to the pitch; waving and displaying of flags, banners and umbrellas; and coordination of chants (that accompany playing bass drums and trumpets and end up being sung by part or the rest of their team's crowd in the stadium while jumping or applauding) during the whole match, are characteristic of their fervent behavior, whose purpose is to encourage their team while intimidating referees and rival fans and players, for which they...