Progressivism in the United States is a left-leaning political philosophy and reform movement. Into the 21st century, it advocates policies that are generally considered social democratic and part of the American Left. It has also expressed itself within center-right politics, such as New Nationalism and progressive conservatism. It reached its height early in the 20th century. Middle/working class and reformist in nature, it arose as a response to the vast changes brought by modernization, such as the growth of large corporations, pollution, and corruption in American politics. Historian Alonzo Hamby describes American progressivism as a "political movement that addresses ideas, impulses, and issues stemming from modernization of American society. Emerging at the end of the nineteenth century, it established much of the tone of American politics throughout the first half of the century."
Progressive economic policies incorporate the socioeconomic principles and views of social democracy and political progressivism. These views are often rooted in the concept of social justice and have the goal of improving the human condition through government regulation, social protections, and the maintenance of public goods. It is based on the idea that capitalist markets left to operate with limited government regulation are inherently unfair, favoring big business, large corporations, and the wealthy. Specific economic policies that are considered progressive include progressive taxes, income redistribution aimed at reducing inequalities of wealth, a comprehensive package of public services, universal health care, resisting involuntary unemployment, public education, social security, minimum wage laws, antitrust laws, legislation protecting labor rights, and the rights of labor unions. While the modern progressive movement may be characterized as largely secular in nature, the historical progressive movement was by comparison to a significant extent rooted in and energized by religion.
