 The Small Leading Group on Political and Legal Affairs focused on a narrower set of policy and research concerns, and did not take as active a role intervening in cases or issuing directives, resulting in a degree of increased independence of the judiciary.The crisis precipitated by the 1989 Tiananmen Square protests resulted in a reversal of these reforms, and the Small Group was reverted back to its Commission status, with the goal of maintaining stability through tighter control of public security and legal systems.After the 18th Party Congress in 2012, Meng Jianzhu replaced Zhou Yongkang as the head of the Commission.