I'm not sure what you mean. If you are adding to what I said, I agree. If you mean that your comment contradicts what I said, that doesn't make sense to me.
Also: The war on drugs is to some extent oppression of minorities, who are disproportionately targeted both by law (their vices get serious jail time, others' get treatment; look at the former crack/coke disparity, prescription drug abuse, and the focus on treatment and compassion now that heroin is a rural problem) and by law enforcement and the judiciary, where racial bias is well-established in research.
I believe that there is evidence that Nixon explicitly said he was pursuing it for that reason (also to go after people on the left).