On November 7, 1893, Barcelona's high society flocked to the Liceu, because the opera season was beginning with William Tell by Rossini. Santiago Salvador, who was in his late twenties, accessed the upper floors of the theater from Sant Pau Street and saw the first act. After a short intermission, when the music began Oui, vous la arrachez à mon âme, He pulled out the two Orsini bombs he had hidden and dropped them into the audience. That day, as Èric Lluent (Barcelona, ​​1986) explains, in The bomb at the high school (NOW Books), Salvador inaugurated a new historical era. He was the perpetrator of the first attack of modern, indiscriminate terrorism. Who was Salvador? Who helped him and why? Why do we speak of modern terrorism? The Barcelona-born journalist residing in Reykjavik answers all these questions.