How did Tiberius die?

Tiberius Gracchus was murdered by the senate because of his continued attempts at opposing their beliefs. He also tried to re-establish some power to the urban mob which angered the senate even more. In the beginning of the Roman Republic and up until Tiberius became Tribunate the senate was used to having the monopolopy of power over Rome and it's people, thus, were not used to and did not approve of Tiberius' reforms no matter how much they were needed.