With the introduction of Guided Democracy, the SOBSI became the institutionalized representative of labor within the Sukarno government. It oversaw nationalization efforts, continuing the running of companies under state control. These nationalizations drove SOBSI into a conflict with the armed forces, fighting for influence over the state controlled companies. This conflict culminated in the Indonesian mass killings of 1965–66, in which the army massacred left-wing activists, feminists and ethnic and religious minorities, killing hundreds of thousands. The military leader Suharto rose to power, instituting a right-wing military dictatorship known as the New Order. The SOBSI was subsequently declared illegal by the new regime and many of its members and leaders were killed.