Tribunes were elected officials in ancient Rome who represented the interests of the common people, known as the plebeians. They had the power to veto decisions made by the Senate and other magistrates, ensuring that the rights of the lower classes were protected. This role was crucial in balancing the power dynamics between the wealthy elite and the general populace. The position of tribune was established in the early Roman Republic around 494 BCE. Tribunes could also propose legislation and were considered sacrosanct, meaning that harming them was a serious offense. Their influence played a significant role in the development of Roman law and governance.