The War on Drugs was a matter of method and intensity; the aim was to completely and swiftly eradicate drug abuse rather than move societal incentives.
This could go either way, as far as I know both are possible
wasn't it to discredit political rivals and minorities? like, there really wasn't ever a strong argument against weed (that relied on that stated aim), especially in a post-prohibition America.
This could go either way, as far as I know both are possible