more intellectually coherent, consistent and just than mainstream notions of economic freedom. Economic liberals and right-libertarians argue that private ownership of the means of production and market exchange are natural entities or moral rights which are central to freedom and liberty and argue that the economic dynamics of capitalism are immutable and absolute. As such, they also argue that public ownership of the means of production and economic planning are infringements upon liberty. Critics of socialism have argued that in any society where everyone holds equal wealth, there can be no material incentive to work because one does not receive rewards for a work well done. They further argue that incentives increase productivity for all people and that the loss of those effects would lead to stagnation. Some critics of socialism argue that income sharing reduces individual incentives to work and therefore incomes should be individualized as much as possible. Some philosophers have also criticized the aims of socialism, arguing that equality erodes away at individual diversities and that the establishment of an equal society would have to entail strong coercion. Many commentators on the political right point to the mass killings under communist regimes, claiming them as an indictment of socialism. Opponents of this view, including supporters of socialism, state that these killings were aberrations caused by specific authoritarian regimes, and not caused by socialism itself, and point to mass deaths in famines, wars and massacres that they claim were caused by colonialism, capitalism and anti-communism as a counterpoint to those killings. See also Socialism/Is it a thing of the left? Anarchism and socialism Critique of work List of anti-capitalist and communist parties with national parliamentary representation List of communist ideologies List of socialist songs List of socialist states Marxian critique of political economy Zenitism Socialism by country (category) References Bibliography Further reading George Lichtheim, A Short History of Socialism. Praeger Publishers, 1970. Alan Maass. The Case for Socialism. Haymarket Books, 2010 (Updated Edition). . Marx & Engels, Selected works in one volume, Lawrence and Wishart (1968) . Joshua Muravchik, Heaven on Earth: The Rise and Fall of Socialism , San Francisco: Encounter Books, 2002. . Bertell Ollman, ed., Market Socialism: The Debate among Socialists, Routledge, 1998. . Leo Panitch, Renewing Socialism: Democracy, Strategy, and Imagination. . Emile Perreau-Saussine, What remains of socialism?, in Patrick Riordan (dir.), Values in Public life: aspects of common goods (Berlin, LIT Verlag, 2007),