"When one thinks of American blackness, there is the unsaid ugly truth that nearly all American blacks who have descended from the historical African diaspora in America have one (or several) rapacious white slave owners in their family tree at some point. Here, in the early days of the United States, was the invention of racism for economic necessity. From 1619 until 1865, white male Americans chose to breed a black enslaved workforce through the state-sanctioned rape of black women to build the new nation and support their white supremacist class. Race became the single unifying identifier — determining everything about one's life starting with this most basic division: enslaved or free. The American law was that the "condition of the child followed that of the mother," backed up by the "one drop rule," the legal framework that dictated even one drop of blackness made an individual black, never white. The idea of blackness as a pollutant, a taint that would erode the purity of whiteness, was seized by politicians around the world then — and now. Because of this legacy of sexual violence and anti-blackness, black and white mixed individuals have long been considered black in America. To a much larger degree than many people would like to admit, race still determines a vast part of one's life — social networks and mobility, birth and other medical care, employment opportunities and so on. Indeed, there is an entire genre of literature and film, popularized in the late 1800s and early 1900s, composed of blacks "passing" for white to avoid this racism. Some of the most famous examples are Nella Larsen's 1929 novel, Passing; James Weldon Johnson's 1912 opus, The Autobiography of an Ex-Colored Man; and the 1959 film The Imitation of Life."