[1] Lazio was founded in 1900 in Piazza della Libertà, Borough of Prati and initially played at the Rondinella field in the upper-class quartiere of Parioli.

Roma began playing at the Motovelodromo Appio and subsequently, when the new stadium was built after only two years, moved to the working-class rione of Testaccio.

Making ironic remarks, known as sfottò, focused on the origins of both sets of fans, is a traditional way of teasing between the supporters of Lazio and Roma.

Thanks to the influence of Fascist general, Giorgio Vaccaro, Lazio were the only major team from Rome to resist the merger, thus a kind of rivalry emerged from the very early years of the coexistence in the same city.

[3] The derby on 21 March 2004 was abandoned four minutes into the second half with the score tied at 0–0, when a riot broke out in the stand; the president of the Lega Nazionale Professionisti, Adriano Galliani, ordered referee Roberto Rosetti to suspend the match.

Roma captain Francesco Totti then asked for the match to be called off, at which point President Galliani was reached by the referee by mobile phone—from the pitch—and ordered the game postponed.

He celebrated by taking a selfie in front of Roma's fans in the Curva Sud, having given his phone to the goalkeeping coach before kick off.

In particular, at a match in the 1998–99 season, Laziali unfurled a 50-metre banner around the Curva Nord that read "Auschwitz is your town, the ovens are your houses".

[14] In 2017, Lazio fans left anti-Semitic stickers of Anne Frank in a Roma jersey, as well as graffiti, at the Stadio Olimpico.