In his 1965 report on the black family, Daniel Patrick Moynihan highlighted the rising fraction of black children growing up in households headed by unmarried mothers. He attributed the increase largely to the precarious economic position of black men, many of whom were no longer able to play their traditional role as their family’s primary breadwinner. Moynihan argued that growing up in homes without a male breadwinner reduced black children’s chances of climbing out of poverty, and that the spread of such families would make it hard for blacks to take advantage of the legal and institutional changes flowing from the civil rights revolution.
McLanahan, Sara, and Christopher Jencks. "Was Moynihan Right?" Education Next 15.2 (Spring 2015): 16-22.