From a comment on a Facebook post by Max Sawicky, asking about the difference between socialism and social democracy (sadly, I think the context was one of the internecine disputes in which the left has long specialised, though the right has now caught up and surpassed us).
Socialism and social democracy
I’ve switched back and forth between the two terms, with a more or less constant understanding of their meaning. For me, “social democracy” refers to the actual policy program advocated and to a significant extent implemented by social democratic parties in the mid-20th century: free and universal health care and education, a social welfare system sufficiently broad and generous to eliminate poverty, full employment and strong unions, in the context of a mixed economy. “Socialism” refers to a fundamental transformation of the capitalist system incorporating and going beyond the social democratic program to end large-scale capital and dependence on wage labour.
That is, as I use the terms, social democracy refers to a contemporary policy program and socialism to a utopian aspiration. During the period of neoliberal dominance, , I described myself as a social democrat, defending the achievements of the 20th century and trying to extend them where possible. Now that there is an opening for the future, we need the kind of utopian vision I associated with “socialism”.