Large-scale protests and incidents of civil disobedience in the People's Republic of China are described by its government as "mass incidents" (Chinese: 群体性事件).
Mass incidents are defined broadly as "planned or impromptu gathering[s] that form because of internal contradictions", and may include public speeches or demonstrations, physical clashes, public airings of grievances, and other group behaviors that are seen as disrupting social stability. Through contemporary analysis of such events four key aspects of mass incidents have been identified "diversified participants, highly organized actions, easily escalated conflicts and thornier disputes to settle". Mass incidents have occurred in China because of the treatment of workers within state-owned enterprises (SOEs) and special economic zones (SEZs), the widening of income disparities, and issues associated with development projects, namely forced land acquisition and environmental degradation.