Non-Marxist Perspectives
Social commentators, historians and socialist theorists had commented on class struggle for some time before Marx, as well as the connection between class struggle, property, and law: Augustin Thierry, François Guizot, François-Auguste Mignet and Adolphe Thiers. The Physiocrats, David Ricardo, and after Marx, Henry George noted the inelastic supply of land and argued that this created certain privileges (economic rent) for landowners. According to the historian Arnold Toynbee, stratification along lines of class appears only within civilizations, and furthermore only appears during the process of a civilization's decline while not characterizing the growth phase of a civilization.
Proudhon, in What is Property? (1840) states that "certain classes do not relish investigation into the pretended titles to property, and its fabulous and perhaps scandalous history."
Fascists have often opposed class struggle and instead have attempted to appeal to the working class while promising to preserve the existing social classes and have proposed an alternative concept known as class collaboration.
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