Marxist Critique of Liberalism

How do Marxists view the theory and practice of Liberalism? Don't they acknowledge the contributions of Classical Liberal Political Thinkers? Why do they oppose? What in Liberalism is objectionable to them? From which perspective Marxists analyse liberalism? What is Marxist understanding of individual, society, rights, economy, law and the state, and how they differ from the Liberal perspective? What the Marxists consider useful in their struggle for socialism? The video lecture seeks to answer some of these vital questions.