South Africa’s last apartheid President, F.W de Klerk, has withdrawn from a scheduled seminar in the U.S about minority rights because he did not want to embarrass himself or his host in the current racial climate, according to his foundation.

De Klerk, who was awarded a Nobel Peace Prize with Nelson Mandela was scheduled to speak on July 1 at an American Bar Association (ABA) virtual event on issues such as minority rights, racism, and the rule of law, Reuters reported.

“The allegation that De Klerk was involved in gross violations of human rights is baseless,” the F.W De Klerk foundation said in a statement.

After the criticisms, ABA confirmed De Klerk would no longer speak at the event.

“At a time like this where the whole world is crying out for recognition and demanding that value be placed on our lives, on Black lives, we think that ABA erred in inviting someone like De Klerk,” said Lukhanyo Calata, the son of Fort Calata, who was killed along with three other anti-apartheid activists by South African police in 1985 in an incident known as “The Cradock Four”.