So just take a look at the different prosecution rates and sentencing rules for ghetto drugs like crack and suburban drugs like cocaine, or for drunk drivers and drug users, or just between blacks and whites in general―the statistics are clear: this is a war on the poor and minorities. Or ask yourself a simple question: how come marijuana is illegal but tobacco legal? It can't be because of the health impact, because that's exactly the other way around―there has never been a fatality from marijuana use among million reported users in the United States, whereas tobacco kills hundreds of thousands of people every year. My strong suspicion, though I don't know how to prove it, is that the reason is that marijuana's a weed, you can grow it in your backyard, so there's nobody who would make any money off it if it were legal. Tobacco requires extensive capital inputs and technology, and it can be monopolized, so there are people who can make a ton of money off it. I don't really see any other difference between the two of them, frankly―except that tobacco's far more lethal and far more addictive.
— Noam Chomsky
drugswar-on-drugs