There have been millions of conflicts that reflect the fundamental antagonism between the working class and capital: in workplaces, in politics, in most of the institutions that help make the system tick. Through struggles, workers, sometimes in alliance with peasants, have won markedly better working conditions, protective laws, extensive social welfare provisions, even, in a few cases, sweeping revolutionary transformations. They have fought against racism and sexism and the destruction of Mother Earth. Indeed, the working class has significantly changed the world.