Phenomena of contemporary sports, primarily football. That is what hooligans and ultras could be called. Both groups have a common affection for one sports club, some would say even fanatical loyalty. While for ultras it is typical to support the team at the venue for the sports competition - with flags, chants, choreography, frequently also pyrotechnics and open cooperation with the club -, hooligans prove to be violent. Feuding groups of hooligans also clash outside stadiums and dates of sports matches; in their presentation, it is no longer about cheering for a club (for a sport), but more or less spontaneous battles (so-called the third half-times).
The folder in the Czech original contains an introduction of basic concepts and perhaps even slang or sociolect related to the given phenomenon, as well as working and study materials (articles, interviews, presentations,...) and other useful information (films and series, internet portals, books, professional workplaces and organizations, televisual and radio documentaries,...).