If Christ is our role model then please show me where He spoke out against Rome. You will not find it in the bible you will find Him speaking out about the spiritual condition of the ruling religious class.
Christ spoke through action, like in the temple where he overturned the tables of the money changers. The money changers were the means Rome extracted their tax from the Jews. There was a moral element involved also. It was the idea of buying ones forgiveness from sin and the greediness of the money changers. It embodied the evil relationship between Rome and the Jewish state.