The Levellers was a political movement during the English Civil War (1642–1651) that emphasized popular sovereignty, extended suffrage, equality before the law, and religious tolerance, all of which were expressed in the manifesto “Agreement of the People“. The Levellers opposed common ownership, except in cases of mutual agreement of the property owners. The Levellers came to prominence at the end of the First English Civil War (1642–1646) and were most influential before the start of the Second Civil War (1648–1649). Leveller views and support were found in the populace of the City of London and in some regiments in the New Model Army.
The Levellers were not a political party in the modern sense of the term; they did not all conform to a specific manifesto. They were organised at the national level, with offices in a number of London inns and taverns such as The Rosemary Branch in Islington, which got its name from the sprigs of rosemary that Levellers wore in their hats as a sign of identification. From July 1648 to September 1649, they published a newspaper, The Moderate, and were pioneers in the use of petitions and pamphleteering to political ends. They identified themselves by sea-green ribbons worn on their clothing. After Pride’s Purge and the execution of Charles I, power lay in the hands of the Grandees in the Army (and to a lesser extent with the Rump Parliament). The Levellers, along with all other opposition groups, were marginalised by those in power and their influence waned. By 1650, they were no longer a serious threat to the established order.