re: The "racial impact" on the war on drugs.

I do think patrol frequency has something to with it, along with ingrained wealth (you can smoke weed in your house in the suburbs all day long, but if you're in a little tenement you might need to move onto the porch or the balcony or the corner to do the same) , leniency (cops run into some college kids with a bit of weed on them they often confiscate and warn, cops run into the same situation but with a young black male they probably think "dealer" and bust him, etc) and finally the disparities in sentences for the various drugs of choice (meth is the first "white" drug to be treated like say crack-- its not a coincidence that its a drug for poor white people, if stock brokers and sorority girls were smoking meth it'd be a serious but not life altering sentence).