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Causal Effect of Small Businesses on Street Theft: Evidence from a Natural Experiment of the Beijing Cleanup Campaign

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Abstract

Objectives

To examine the causal impact of small businesses on street theft and the underlying mechanisms.

Methods

The “Cleanup Holes in the Wall” campaign in Beijing, China, provides a rare opportunity for a natural experiment. Drawing on street view images processed by deep learning algorithms and other big data sources such as court judgments and location-based service (LBS) population, we use difference-in-difference (DID) models to investigate how the disappearance of small businesses leads to changes in the occurrence of theft. We further examine the mechanisms by introducing mediators, including ambient population and social activity.

Results

The treatment units that experienced a mass loss of small businesses showed a significant reduction in street theft compared to the control units that were less affected by the cleanup campaign. Ambient population and social activity played a mediating role in promoting and deterring crime, respectively, with the former dominating. The results remain robust after including covariates in the models, balancing covariates using the propensity score matching method, and adopting alternative thresholds to classify the treatment group.

Conclusions

There are two competing yet coexisting mechanisms through which small businesses influence street theft. On the one hand, commercial premises provide large numbers of criminal opportunities for potential offenders; on the other hand, they are central to local social control and order. While small businesses exercise a certain amount of natural surveillance power, as a whole, they function primarily as crime generators. Implications for implementing targeted policies tailored to the nature of small businesses are discussed.

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Notes

  1. News media reports such as South China Morning Post (https://www.scmp.com/culture/arts-entertainment/article/2107970/beijing-hutong-clean-threatens-independent-art-space), China Daily (https://www.chinadailyhk.com/articles/220/111/152/1505700836140.html/), and City Monitor (https://citymonitor.ai/environment/bricking-beijing-could-end-hutong-mean-end-street-life-chinese-capital-3287) have documented more details about small businesses at the time.

  2. More information can be found in media reports such as Caixin (https://www.caixinglobal.com/2017-08-25/street-stores-vanish-in-beijing-as-government-seals-up-holes-in-wall-101135578.html), ThePaper (https://www.thepaper.cn/newsDetail_forward_2160157), New York Times (https://www.nytimes.com/2017/07/17/world/asia/beijing-china-reconstruction-hutong.html), and Foreign Policy Magazine (https://foreignpolicy.com/2017/05/31/how-to-destroy-the-heart-of-a-chinese-city-beijing).

  3. We compute the commercial signage index using the street view images and a semantic segmentation approach described in detail in Sect. "Natural Experiment Design". The formula is signage indexi = \(\left( {\mathop \sum \limits_{j}^{4} T_{j} /4 + \mathop \sum \limits_{j}^{4} SB_{j} /4} \right)/\left( {\mathop \sum \limits_{j}^{4} B_{j} /4 + \mathop \sum \limits_{j}^{4} H_{j} /4 + \mathop \sum \limits_{j}^{4} SS_{j} /4} \right)\), where Tj, SBj, Bj, Hj, SSj denote the proportion of trade name, signboard, building, house, and skyscraper pixels, respectively, to all pixels in the jth heading angle of sampling point i. According to the paired-samples t test, the average commercial signage index of the treatment group, where the cleanup campaign is concentrated, shows a statistically significant decrease in the post-intervention period (2017–2019) compared to the pre-intervention period (2014–2016). However, for the control group, which is less affected by the cleanup campaign, the average signage index does not change significantly between the two periods. This suggests that the cleanup campaign does lead to the demise of small businesses.

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Acknowledgements

This article was completed with support from the Youth Program of National Social Science Foundation of China (21CSH006).

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Correspondence to Guangwen Song.

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Appendix

Appendix

See Tables 4, 5, 6, 7, 8, 9, 10 and 11.

Table 4 Results of regression analysis after PSM (one-to-one matching, N = 1168)
Table 5 Results of regression analysis after PSM (two-nearest neighbor matching, N = 1672)
Table 6 Results of regression analysis after PSM (three-nearest neighbor matching, N = 1985)
Table 7 Regression analysis results for treatment group 2 and control group (N = 2988)
Table 8 Regression analysis results for treatment group 2 and control group with covariates (N = 2988)
Table 9 Regression analysis results for treatment group 3 and control group (N = 2812)
Table 10 Regression analysis results for treatment group 3 and control group with covariates (N = 2812)
Table 11 Regression results of the parallel trend test

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Zhang, Y., Cai, L., Song, G. et al. Causal Effect of Small Businesses on Street Theft: Evidence from a Natural Experiment of the Beijing Cleanup Campaign. J Quant Criminol (2024). https://doi.org/10.1007/s10940-024-09586-3

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  • DOI: https://doi.org/10.1007/s10940-024-09586-3

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