use of force no relation Crisis of the Roman Republic
Political violence
The impact of Tiberius' murder started a cycle of increased political violence: "the oligarchy had introduced violence into the political system with the murder of Tiberius Gracchus and over the years the use of violence became increasingly acceptable as various political disputes in Rome led to more and more bloody discord". The use of force to suppress reform also suggested that the republic itself was temperamentally unsuited for producing the types of economic reforms wanted or needed, as in the Gracchi's framing, by the people.In terms of periodisation, the death of Tiberius Gracchus in 133 BC is widely viewed as the start of the "late republic" and the beginning of the republic's eventual collapse. For example, in The Cambridge Companion to the Roman Republic, Jürgen von Ungern-Sternberg writes:It was Tiberius' assassination that made the year 133 BC a turning point in Roman history and the beginning of the crisis of the Roman Republic. 
Even in ancient times, Cicero remarked as much in saying "the death of Tiberius Gracchus, and even before that the whole rationale behind his tribunate, divided a united people into two distinct groups". However, scholars such as Mary Beard also warn that Cicero is exaggerating for rhetorical effect and that "the idea there had been a calm consensus at Rome between rich and poor until [133 BC] is at best a nostalgic fiction".The death of Gaius as well inaugurated a new tool for the senate in upholding the current order by force: the so-called senatus consultum ultimum. Opimius was prosecuted in 120 BC for violating Gaius' law against extralegal punishment. The ex-consul, however, was able to successfully defend himself by appealing to the senate's decree and by arguing that Gaius and Flaccus deserved to be treated as seditious enemies rather than citizens. Opimius' acquittal set the precedent that the senatus consultum ultimum – which was merely advice from the senate: "the senate could pass any decree it liked, it was the magistrate who was responsible for any illegal actions" – was an acceptable ground to vitiate citizen rights extralegally.
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