Are any criminal justice researchers or marijuana reform groups taking a very close look at marijuana arrests in recent years?

The question in the title of this post is prompted by seeing today these two notable headlines about marijuana arrests in two notable cities:

• “Marijuana Arrests on the Rise in NYC Despite Mayor’s Lenient 25-Gram Rule” 

• “Dallas’ Black Population Faces Much Higher Odds of Arrest for Marijuana than Whites“

UPDATE: Here are three more recent press piece on this topic that I just came across:

• “Study Shows More Marijuana-Related Arrests In Nebraska After Colorado Legalization“

• “Marijuana and criminal justice in New Jersey: Are marijuana arrests unfair?“

• “Virginia crime report: Marijuana arrests down for teens, but arrests for heroin up for some ages“