Dorothy Day was an influential American journalist and social activist who co-founded the Catholic Worker Movement. Born in New York in 1897, she spent her early years exploring various radical political ideologies, including socialism and anarchism, before converting to Catholicism. She became a prominent figure in American religious and political life, advocating for pacifism, distributism, and direct aid to the poor. Throughout her life, she remained committed to nonviolent direct action, which frequently led to her arrest for civil disobedience.