It's been some time since I studied this, so check it out for yourself, but my understanding is that Marx delineated several stages through which societies progress on the road to Communism. The first stage of this progression he termed 'Capitalism.' Thus, 'Capitalism' is really a system coined by Marx as an early form of Communism. I try to avoid the use of the term. 'Free Market,' in my opinion, not 'Capitalism,' is the is the system that should be advanced by Liberty advocates.
Want DP delivered to your inbox daily? Subscribe here: