No revolt can succeed without professional revolutionists. These revolutionists live outside the formal structures of society. They are financially insecure—Vladimir Lenin spent considerable time in exile appealing for money from disenchanted aristocrats he would later dispossess. They dedicate their lives to fomenting radical change. They do not invest energy in appealing to power to reform. They are prepared to break the law. They, more than others, recognize the fragility of the structures of authority. They are embraced by a vision that makes compromise impossible. Revolution is their full-time occupation. And no revolution is possible without them.