チューリッヒ歌劇場
These factors contributed to the so-called "Opernhauskrawall", meaning riots or youth protests at the Zürich Opera House. The youth protests, beginning with this one in Zurich in 1980 and continuing throughout 1980 and again in 1982, mark the beginning of the modern youth movement in Switzerland, generating interest in alternative youth culture and a revival of the former hippie movement.