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Study breakdown

Cannabis Legalization Reduced Possession Arrests but Created New Racial Disparities in Public Consumption Arrests

evidence
The takeaway

While cannabis legalization reduced absolute racial disparities in possession arrests in DC and LA, new public consumption arrests emerged with significant racial disparities.

Criminal justice researchers, cannabis policy advocates, and racial equity organizations.

9.1 relative disparity

in public consumption arrests between Black and white residents in DC after legalization

What the researchers found

Both cities saw decreased absolute disparity in possession arrests post-legalization. However, public consumption arrests emerged with significant racial disparities: in DC, 4.0 more Black than white arrests per month; in LA, relative disparity of 6.7.

Why it matters

Cannabis legalization aimed to reduce racial disparities in enforcement, but the shift from possession to public consumption arrests may simply move the disparity to a new violation category.

The numbers in context

DC data 2012-2019, LA data 2010-2019. DC public consumption: absolute +4.0 more Black arrests/month, relative disparity 9.1. LA public consumption: absolute +0.6, relative disparity 6.7. Possession arrest disparities decreased in both cities.

How the study worked

Analysis of publicly available police department arrest data from DC Metropolitan Police (2012-2019) and LA Police (2010-2019), comparing average monthly arrest rates by race across legal status changes.

Who was studied

Cannabis arrest data from Washington DC and Los Angeles police departments across racial groups.

What this study cannot tell us

Two cities may not represent national trends. Arrest data reflects enforcement patterns, not actual behavior. Cannot account for all confounders affecting arrest rates.

How to read the evidence

Descriptive analysis of publicly available arrest data; straightforward methodology but limited to two cities.

When this study was published

Covers arrest data through 2019-2020 in two major US cities.

The bigger picture

This study reveals that cannabis legalization social justice goals are only partially achieved when new enforcement categories emerge that reproduce racial disparities in policing.

Replication

Two-city analysis; broader national analysis would strengthen conclusions.

Funding

Not specified in abstract

Conflicts of interest

Not specified in abstract

Questions still open

  • Should cannabis legalization include protections against racially disparate enforcement of new cannabis violations?
  • Are public consumption arrests being used as a substitute for possession arrests?

Read the original research

A tale of two cities: Racialized arrests following decriminalization and recreational legalization of cannabis.

Drug and alcohol dependence, 249, 109911

Citation

Joshi, Spruha; Doonan, Samantha M; Pamplin, John R. (2023). A tale of two cities: Racialized arrests following decriminalization and recreational legalization of cannabis.. Drug and alcohol dependence, 249, 109911. https://doi.org/10.1016/j.drugalcdep.2023.109911