A "revolutionist" refers to someone who wants to bring about big changes in society and is willing to take action to achieve those changes. Full definition
In the sequel to Demon Gaze, Signa and others have formed a party of revolutionists to search for their disappeared mother. (handheldplayers.com)
The French revolutionists were notoriously unmannerly in relation to their royal opponents, and the various communist revolutions have made a clean sweep of feudalistic and capitalistic patterns of behavior. (religion-online.org)
Next in importance for a clergyman is his connection with a community change agency — reformist or revolutionist in approach, i.e., working within a structure for change or organized outside existing structures to press for change. (religion-online.org)