The deaths of the Gracchi at the hands of their political foes seemed to herald the increasing streets violence that would characterize the Roman Civil War and decline of the Republic, as more politicians maintained bands of thugs in Rome itself.
Was this street violence a new turn of events? Or was it already common, or at least not unheard of, by the time of Tiberius Gracchus? Was his murder an unprecedented act that shocked Rome generally? Were there any discernible trends in political street violence around this time?
And yes, as an aside, I am thinking of parallels in Weimar and, sad to say, our own time, where legitimate political parties also have informal militias putting in shows of force in public, with accelerating effects.