This week, the UN General Assembly voted to declare the transatlantic African slave trade as "the gravest crime against humanity." UN Secretary-General Antonio Guterres said "the transatlantic slave trade was a crime against humanity that struck at the core of personhood, broke up families and devastated communities." Ghana's President John Mahama praised the declaration, saying "we came together in solemn solidarity to affirm truth and pursue a route to healing and reparations. The adoption of this resolution serves as a safeguard against forgetting." US ambassador to the UN Dan Negrea objected "history is replete with crimes against humanity--genocides, massacres, torture,...