How to become a police assistant?

First of all, I admire the sacred profession of police, and I have dreamed of becoming a police since I was a child. I will take things seriously and deal with them calmly. Obey the arrangement of superior leaders and dedicate yourself to the country and the people. Do a good job in maintaining social order and protecting people's property from any responsibility and loss. Question 2: Why do you work as a policeman? I feel a sense of justice all over, which is dangerous for those who bully. Often crack down on petty theft, thinking that personal strength is limited, and want to use the same strength to crack down on crime and protect people's stable lives.