The stance of the marxist left influenced by scientism has stood on the ‘no free will’ side of a classic dialectic.
Surely that is a mistake, as is the theory of historical materialism. In the final analysis the issue of free will should be more open on the left and be able to consider the radical challenge of Kant et al. There is no reason not to embrace the dialectic as such, but the strangeness of the ‘stages of production’ theory have crippled the whole range of marxist theory.
The left already has an alternative in Kantian ethical socialism...
Source: Lawrence Krauss and Richard Dawkins on free will – Uncommon Descent
1848+: The End(s) of History 