1. Purpose of behavior: The purpose of the thief's behavior is to illegally obtain other people's property and commit theft. The purpose of police behavior is to maintain social order and protect citizens' lives and property.
2. Legal status: The thief's behavior is illegal and criminal, and they have violated the law. The police are the law enforcers and have the statutory power to exercise their duties and protect the normal operation of society.
3. Duties and powers: thieves have no legal rights, and they have no right to arrest, detain or prosecute others. The police have the right to perform their duties, including arresting suspects, conducting investigations and prosecuting criminals.
4. Social acceptance: thieves are condemned and punished by society, and they are usually regarded as immoral and illegal people. The police are the guardians of society, and their work is recognized and respected by society.
5. Service target: The thief's behavior directly hurts others, and they choose illegal ways to obtain property. The police serve the public. Their duty is to protect the safety and rights of citizens.