In this Peasants' Revolt, mobs overran the counties around London. The upper classes fled to the woods. Written records of the servitude of villeins were burned in their halls, which were also looted. Title deeds of landlords were burned. Rate rolls of general taxation were destroyed. Prisoners were released from gaols. Men connected with tax collection, law enforcement, attorneys, and alien merchants were beheaded. The Chief Justice was murdered while fleeing. The archbishop, who was a notoriously exploitive landlord, the chancellor, and the treasurer were murdered. Severed heads were posted on London Bridge. A mob took control of the king's empty bedchamber in the Tower. The villeins demanded that service to a lord be by agreement instead of by servitude, a commutation of villein service for rents of a maximum of 4d. per acre yearly, abolition of a lord's right for their work on demand (e.g. just before a hail storm so only his crops were saved), and the right to hunt and fish. The sokemen protested having to use the lord's mill and having to attend his court. The revolt was suppressed and its leaders punished. The king issued proclamations forbidding unauthorized gatherings and ordering tenants of land to perform their customary services. The poll tax was dropped. For the future, the duty to deal with rioting and vagrants was given to royal justices, sheriffs, mayors, bailiffs, and constables as well as the Justices of the Peace. There was a high Justice of the Peace in each hundred and a petty constable in each parish. Justices of the Peace could swear in neighbors as unpaid special constables when disorder broke out. The sheriff was responsible for seeing that men of the lower classes were organized into groups of ten for police and surety purposes, and for holding of hundred and county courts, arresting suspects, guarding prisoners awaiting trial, carrying out the penalties adjudged by the courts, and collecting Crown revenue through his bailiffs. Royal writs were addressed to the sheriff. Because many sheriffs had taken fines and ransoms for their own use, a term limit of one year was imposed. Sheriffs, hundreders, and bailiffs had to have lands in the same counties or bailiwicks [so they could be held answerable to the King]. Efforts were made to keep laborers at the plough and cart rather than learn a craft or entering and being educated by the church. The new colleges at the universities ceased to accept villeins as students.