I consider myself a socialist too, but I must admit that in the name of socialism, there have been a lot of attempts at 'social engineering', in which the "common good" was placed above the value of the individual. In TOS, Coon and Roddenberry explicitly rejected societies in which the individual life was not an "end in itself", but somehow became a "means". They had both fought some of the worst of these systems - in WW2 they fought Japan and Germany - and they modeled the Klingons on their worst experiences. With age, I still support the socialist candidate in British elections, but I'm aware that even within the Labour Party, there have been people who lost sight of the individual as an end in itself, over time, so I do so with wary caution. Recently someone argued to me that the point at which the divergence occurred was Plato and Aristotle - Plato was game for using art, education, etc, to 'sculpt' society, which unfortunately seems to always result in the individual becoming a means - Aristotle however was all about accepting the natural reality here and now and working with that - so he could be seen as the ancestor of "individual rights" being slowly won through democracy - the ancestor of the US Constitution's famous position of all people having right to "life, liberty and the pursuit of happiness". For a totalitarian, a human is merely a vector of ideology, and art merely a weapon - just as how the Cardassians, Romulans, etc, treat it.