As I say, the logical contradiction is between capital and labor. There can be no peace, no reconciliation, no long-term co-existence of capital and labor, because they are opposites.
In the late C18th, C19th and early C20th, in the industrialized world, capital and labor were approximately incarnated in two social classes: bourgeoisie and proletariat. The bourgeois lived from capital, the proletarian lived by labor.
But since the Second World War, the vast majority of people in the post-industrial West do both. The opposition between capital and labor is therefore internalized.