The conversion of masscrime is a difficult problem in judicatory practice, as it does not bring to bear accurate theory to guide.
聚众犯罪的转化犯在司法实践中是一个较为疑难的问题，主要原因是没有运用正确的理论加以指导。
2
The perception of the speech role is quite important in police's social intercourse. It is the basic assurance of serving mass, managing society, attacking crime.
Public security information includes mainly: crime, public security case, incident, accident, administration and every aspect of mass and individual in social production.