Reparations are owed for that in addition to many more things during that time and since then.
"A detailed report by a United Nations group has harshly condemned the many forms of structural racism black Americans face in the United States, and called for reparations for centuries of enslavement, segregation and discrimination.
The U.S. government is “not acting with due diligence to protect the rights of African Americans,” the group said. It called for more thorough civil rights laws, and encouraged the government to create a national plan to comprehensively address racism.
“There is a profound need to acknowledge that the transatlantic trade in Africans, enslavement, colonization and colonialism were a crime against humanity and are among the major sources and manifestations of racism, racial discrimination, Afrophobia, xenophobia and related intolerance,” the U.N. group stressed. “Past injustices and crimes against African Americans need to be addressed with reparatory justice.”"
For the most part current laws and changing views have achieved the goal of equality for all races. Reparations would be undermining those achievements and rewarding people for a treatment that they never suffered as their parents and grandparents did, not them. Equal rights for all but no special treatment or attempts to pay people for wrongs done to their ancestors.