Plebeians in the ancient Rome were people who were not the members of any of the classes ( which were patrician, senatorial and the equestrian classes) and were free citizens.
This section of ancient Rome included the normal working classes of the society like the the farmers, peasants, bakers or the builders.
The plebeians were responsible for having weakening the roman republic because of the struggle that they had with the patricians who were the aristocrats. They wanted equal status compared with the patricians.
