Workers World Party in the context of 1956 Hungarian Revolution

The American Left refers to the groups or ideas on the left of the political spectrum in the United States. It is occasionally used as a shorthand for groups aligned with the Democratic Party. At other times, it refers to groups that have sought egalitarian changes in the economic, political, and cultural institutions of the United States. Various subgroups with a national scope are active. Liberals and progressives believe that equality can be accommodated into existing capitalist structures, but they differ in their criticism of capitalism and on the extent of reform and the welfare state. Anarchists, communists, and socialists with international imperatives are also present within this macro-movement. Many communes and egalitarian communities have existed in the United States as a sub-category of the broader intentional community movement, some of which were based on utopian socialist ideals. The left has been involved in both the Democratic and Republican parties at different times, having originated in the Democratic-Republican Party as opposed to the Federalist Party.

Although left-wing politics came to the United States in the 19th century, there are currently no major left-wing political parties in the country. Despite existing left-wing factions within the Democratic Party, as well as minor third parties such as the Green Party, Communist Party USA, Party for Socialism and Liberation, American Communist Party, Workers World Party, Socialist Party, and American Solidarity Party (a Christian democratic party leaning left on economics), there have been few representatives of left-leaning third parties in Congress. Academic scholars have long studied the reasons why no viable socialist parties have emerged in the United States. Some writers ascribe this to the failures of socialist organization and leadership, some to the incompatibility of socialism with American values, and others to the limitations imposed by the United States Constitution. Vladimir Lenin and Leon Trotsky were particularly concerned because it challenged orthodox Marxist beliefs that the most advanced industrial country would provide a model for the future of less developed nations. If socialism represented the future, then it should be strongest in the United States. While branches of the Working Men's Party were founded in the 1820s and 1830s in the United States, they advocated land reform, universal education and improved working conditions in the form of labor rights, not collective ownership, disappearing after their goals were taken up by Jacksonian democracy. Samuel Gompers, the leader of the American Federation of Labor, thought that workers must rely on themselves because any rights provided by government could be revoked.

The Party for Socialism and Liberation (PSL) is a communist political party in the United States. PSL formed in 2004, when its members split from the Workers World Party.

PSL describes itself as a revolutionary socialist party, as the party believes that only a revolution can end capitalism and establish socialism. PSL pursues this goal by participating in local protests, running candidates in elections, and conducting political education. PSL and its affiliates are partially funded by Neville Roy Singham, a Shanghai-based American billionaire businessman.