Unlike his elder brother, Gaius somehow succeeded in being elected tribune twice. But, in murky circumstances, he failed to be elected again for 121 BCE. In that year he resisted the efforts of the consul Lucius Opimius, a diehard who became something of a hero to the conservatives, to cancel much of his legislation. In the process he was killed, or he killed himself to forestall murder, by an armed gang under Opimius’ command.

The violence was not one-sided. It had broken out after one of the consul’s attendants – apparently going to and fro with the innards from some animals that had just been sacrificed, which added a macabre touch to the scene – shouted some casual abuse at Gaius’ supporters (‘Let the decent guys pass, you tossers’) and made an even ruder gesture. They turned on him and stabbed him to death with their writing styluses, a clear sign that they were not already armed, that they were a literate group, but that they were not merely innocent victims.

In response, the senate passed a decree urging the consuls ‘to make sure that the state should come to no harm’, the same emergency powers act as was later passed during Cicero’s clash with Catiline in 63 BCE. Opimius took the cue, gathered together an amateur militia of his supporters and put some 3,000 Gracchans to death, either on the spot or later in an impromptu court. It established a dubious and deadly precedent.

- SPQR: A History of Ancient Rome, by Mary Beard

Explanation: Just some political violence in the Late Roman Republic! The two sides, Optimates (conservatives) and Populares (reformers), were constantly at each other’s throats, and even small offenses could blossom into violence, like here. This particular incident gave the conservative Optimates the excuse to murder a prominent Populare politician, Gaius Gracchus.

Killing with style taken litterally.

Were their stili really that long? I only recall depictions where a stilus is about the size of a pencil, which makes sense as it is intended for witing on not for stabbing someone in a metre distance.