We knew we couldn’t make it illegal to be either against the war or black, but by getting the public to associate the hippies with marijuana and blacks with heroin, and then criminalizing both heavily, we could disrupt those communities. We could arrest their leaders, raid their homes, break up their meetings, and vilify them night after night on the evening news. Did we know we were lying about the drugs? Of course…
Another "problem" with legalization is that then the government will have to accept that it has to treat those people who become addicts instead of just imprisoning them. But it's not willing to cover them under a Medicare-like healthcare system. Do you think the addicts will afford or could be covered under ACA?
[1]: http://www.nytimes.com/2013/08/24/nyregion/citys-annual-cost...