Legalize drugs?

I know that there's not 100% overlap between liberals and people who want to legalize drugs. But still, it's weird, those that do overlap. On one hand they say that the government is bought & paid for by big business interests, that corporations are running the show. One the other, they offer smiley-face fantasies about "tightly regulating" drug cartels once drugs become legal. the cartels are exponentially richer and more ruthless than any hedge fund manager you'd care to name--pluse they have guns. Just who is going to bring them to heel, and how?