What is the fine-grained topic of the following text: This is just one bit of information to be provided to us by Terrell Thomas of the ACLU Campaign for Smart Justice, an unprecedented multiyear effort to reduce the US jail and prison population by 50% and to combat racial disparities in the criminal justice system. Only return the topic.
ACLU Campaign for Smart Justice's efforts to reduce US jail and prison population and combat racial disparities in the criminal justice system.