Zero tolerance, as the name implies, is zero tolerance and cannot be tolerated. As a concise slogan, "zero tolerance" has been used by more industries and fields, and the "zero tolerance" policy has increasingly become a hot topic of concern and discussion.

The theoretical basis of the "zero tolerance" policy for crime is the "broken window theory" proposed by American political scientist james wilson and criminologist george carlin in 1982.

The theory points out that if a window of a building in a residential area is damaged and not repaired in time, then the actor will mistakenly think that the whole building is unattended, and thus get a psychological hint that it can be destroyed at will.

Over time, these broken windows will give people a sense of social disorder, all kinds of acts of disrupting order and criminal acts will lurk in the insensitive atmosphere of the public, and the whole social security situation will gradually deteriorate.

The important contribution of "broken window theory" is that it strongly convinces people that there is an important connection between minor crimes and serious crimes. The "zero tolerance" policy against crime is an effective and reasonable strategy to repair the "broken window".

For the "zero tolerance" policy, in addition to a lot of cheers and applause, criticism and controversy from western people and scholars are endless.

Some people say that the "zero tolerance" policy can only be one of the many factors contributing to the decline in crime rate.

Some people say that this policy emphasizes that the police strictly enforce the law with a tough attitude, which will inevitably have some negative effects-making the police rude, infringing on the personal interests of citizens, causing tension between the police and the people, and making sensitive ethnic relations pay the price.

It is also said that this policy overemphasizes the statistical results such as the rise and fall of crime rate, which has laid a hidden danger for the future police management style and cultural concept.

Others point out that the severity of "zero tolerance" for minor crimes may lead to the rise of recidivism in the future, starting from the criminological "labeling theory" (the theory holds that once a person is labeled as a criminal, this negative identity will force him to continue on the road of crime).

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