There are a number of strategies that can be used to decrease crime in St. Louis and here are some strategies that have been effective in reducing crime in other cities as well.

Community policing: This approach emphasizes the importance of building strong relationships between law enforcement and the community. By working closely with residents and community organizations, police can gain valuable insights into the crime problem and develop strategies that are tailored to the specific needs of the community.
Targeted enforcement: This approach focuses on identifying and addressing specific hotspots of crime in the community. By using data and analysis to identify the areas where crime is concentrated, law enforcement can deploy resources more effectively and make a bigger impact on crime.
Prevention and intervention programs: This approach aims to prevent crime by addressing the underlying social and economic conditions that contribute to crime. Programs such as youth mentoring, job training, and education can help young people avoid criminal activity and build positive futures for themselves.
Creating opportunities: By developing more opportunities for people through job, education and housing it’s more likely they will have less chances to engage with crime.
Environmental design: This approach aims to reduce crime by making changes to the physical environment that make it more difficult for criminals to commit crime. Examples include adding lighting, improving visibility, and designing spaces to be more open and welcoming.
Addressing substance abuse: This approach aims to decrease crime by addressing the underlying addiction or mental health issues that lead people to commit crimes. Programs like rehabilitation centers and mental health care can help mitigate those issues, which in turn lower crime.
It’s important to keep in mind that different strategies may be more effective in different areas, and a comprehensive approach that addresses multiple factors is likely to be more effective than a single strategy alone. Collaboration and partnerships among different sectors and groups in the community, including law enforcement, social services, and community-based organizations, will be key for successful implementation of the above strategies.