How Critical are Social Democrats of Inequalities caused by Free Market Capitalism?

-Very, but they accept that Capitalism is Amazing for Creating Masses of Wealth as they see the Economic Failure of the USSR as a clear reason why State Central Planning is not good -So they want to Reconcile Socialism with Capitalism, and Narrow Social and Economic inequalities via Welfare and Redistribution. Using Progressive Taxation allows the Money to go from the Top to the Bottom -Social Democrats want to see a Mixed Economy, and allow Private Enterprise and State Control of 'Heights of the Economy; like Water and Electricity -Keynes, while a Liberal, really did shape State Intervention post World War 2