Black and Latino drivers are searched based on less evidence and are more likely to be arrested, Stanford researchers find
when it's time to marshall facts in a series of conversations about race and law enforcement, this article might be helpful. It would also likely be useful to have already introduced the idea of unconscious bias, or to use the article as a on-ramp to that conversation.
http://www.latimes.com/local/lanow/la-me-ln-stanford-minority-drive-disparties-20170619-story.html