Legal analysis: If there is evidence that professional counterfeiters have malicious extortion, they can call the police and ask the public security organs for help.

Legal basis: People's Police Law of the People's Republic of China Article 6 The people's police of public security organs shall perform the following duties according to the division of responsibilities:

(a) to prevent, stop and investigate illegal and criminal activities;

(2) Maintaining public order and stopping acts endangering public order;

(3) Maintaining traffic safety and traffic order and handling traffic accidents;

(four) to organize the implementation of fire control work, the implementation of fire supervision;

(five) the management of firearms, ammunition, controlled knives and inflammable, explosive, toxic, radioactive and other dangerous goods;

(six) the management of special industries as stipulated by laws and regulations;

(seven) to guard the specific personnel specified by the state and guard the important places and facilities;

(8) Managing assemblies, processions and demonstrations;

(nine) the management of housework, nationality, entry and exit affairs and foreigners' residence and travel in China;

(ten) to maintain public order in the country (border);

(eleven) the execution of criminal punishment for criminals sentenced to public surveillance, criminal detention, deprivation of political rights and criminals executed outside prison, and the supervision and inspection of criminals who have been declared suspended or paroled;

(twelve) to supervise and manage the security protection of computer information systems;

(thirteen) to guide and supervise the public security work of state organs, social organizations, enterprises and institutions and key construction projects, and to guide the public security prevention work of mass organizations such as public security committees;

(fourteen) other duties as prescribed by laws and regulations.