Public opinion is quickly shifting in support of marijuana legalization of one form or another, and even one retired Supreme Court justice agrees that its time to legalize. When asked by NPR whether it should be legalized at a federal level, retired justice John Paul Stevens — a Republican appointee whos leaned increasingly liberal — answered quickly, Yes. The distinction between marijuana and alcoholic beverages is really not much. I really think that thats another instance of public opinion [thats] changed, he told NPR.