What did Brutus do to rally support for his cause of driving the Tarquins into exile and overthrowing the monarchy?

he wrote letters to the leaders of neighboring cities in Latium

he broke into the Tarquins' palace, looted it, and threw their valuables in the Tiber River

he traveled to Rome and gave a speech in which he described

he threatened to kill himself as well

he captured Sextus and had him publicly whipped