… is from page 186 of Gordon Wood’s great 1991 book, The Radicalism of the American Revolution:
Yet it is important to realize that the Revolution suddenly and effectively ended the cultural climate that had allowed black slavery, as well as other forms of bondage and unfreedom. With the revolutionary movement, black slavery became excruciatingly conspicuous in a way that it had not been in the older monarchial society with its many calibrations and degrees of unfreedom; and Americans in 1775-1776 began attacking it with a vehemence that was inconceivable earlier.