Capitalism is an economic system. In it the government plays a secondary role. People and companies make most of the decisions, and own most of the property. ... The means of production are largely or entirely privately owned (by individuals or companies) and operated for profit.

communism is a political theory derived from Karl Marx, advocating class war and leading to a society in which all property is publicly owned and each person works and is paid according to their abilities and need.

Socialism is a political and economic theory of social organization which advocates that the means of production, distribution, and exchange should be owned or regulated by the community as a whole.

All these ism are wrong.  "Own" is the problem.  We war over ownership when no one can own anything for nothing belongs to us.  It is this evil in your heart to claim and your great sin for devaluing life.