Here's the summary for the wikipedia article you mentioned in your comment:

Socialism is an economic and political philosophy encompassing diverse economic and social systems characterised by social ownership of the means of production, as opposed to private ownership. It describes the economic, political, and social theories and movements associated with the implementation of such systems. Social ownership can take various forms including: public, community, collective, cooperative, or employee. No single definition encapsulates the many types of socialism, but social ownership is the common element. Traditionally, socialism is on the left-wing of the political spectrum.

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