At the discretion of both law enforcement officers and prosecutors.
Do you have evidence that cannabis laws were enforced disproportionately?
sure, let me spend my Saturday going on Google for you, to find the overwhelming evidence that has been gathered for the past several decades, which you somehow missed.
or claim to have missed.
We know that the US police are more likely to shoot white people than black people based on the FBI data, so it’s not unreasonable to think this may also be an urban legend