As in actual 'whipped-to-death, sold-as-commodities, separated-from-their-children, paid-not-a-single-cent, worked-to-death' slaves? Zero. But you knew this.

As in actual 'whipped-to-death, sold-as-commodities, separated-from-their-children, paid-not-a-single-cent, worked-to-death' slaves? Zero. But you knew this. So one can only wonder what the point of your hyperbole is.