I suppose the adjective democratic is meant to convey that the advocate wants socialism without the nastiness that Castro et al. brought with them: including the jailing in labor camps of various "undesirables" and enemies of the revolution, such as gays and independent-minded librarians. (It seems odd for Sanders to praise Castro for his literacy programs when the dictator also expressly rejected freedom of the press.) But as Hayek pointed out in The Road to Serfdom, what begins as democratic socialism may not stay that way. It could become autocratic socialism as the legislators talk endlessly about how exactly the economy should be planned or guided. After all, even if everyone believed that the government should plan society, it wouldn't follow that everyone agreed on the plan's details. So at some point an impatient president might decide to put a stop to the idle chatter and take matters into his own hands through executive order.
Democratic or not, socialism and interventionism are unfit for human beings.
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