Wikipedia
The Spassguerilla (fun guerrilla) was a grouping within the student protest movement of the 1960s in Germany that agitated for social change, in particular for a more libertarian, less authoritarian, and less materialistic society, using tactics characterized by disrespectful humour and provocative and disruptive actions of a minimally violent nature. Events organized by the groups included such actions as attacking politicians or the police with custard pies. One of the main proponents was Fritz Teufel, sometimes referred to as the political clown of the Extraparliamentary Opposition. The lack of respect for traditional, " bourgeois," "repressive" forms of authority and ritual, countered by irony and humour, was typified by Fritz Teufel's reply when told to stand for the judge at a trial: "If it helps the search for the truth" (Wenn's der Wahrheitsfindung dient).
The tactics and attitudes of this grouping including Fritz Teufel were in contrast to the more serious, revolutionary rhetoric and actions of other groups centred on the SDS and figures like Rudi Dutschke. The tactics of the Spassguerilla were characterized by civil disobedience, symbolic (rather than real) violence, provocation of authority, using actions of the "authoritarian" state, such as trials, as opportunities for "unmasking" outdated traditions. However, genuine civil disobedience involves a refusal to obey certain laws without resorting to physical violence.
It was Wolfgang Lefèvre who said that every event or demonstration should be planned so as to be fun for the participants.
While Rudi Dutschke talked of a "Stadtguerilla" ( urban guerrilla), Fritz Teufel talked of a "Spassguerilla" (fun guerrilla).
The forms of provocative and disruptive protest invented by the Spassguerilla were later adopted by the peace movement of the 1980s and later by youth protest movements in the reunified Germany.
Similar forms of disruption have also been adopted by Cyberspace activists (" hacktivists").