ADDIS ABABA, Ethiopia — President Trump’s dismissal of Haiti, El Salvador and African nations as “s-hole countries” whose inhabitants are not desirable for U.S. immigration shocked people around the world and provoked swift condemnation. “The African Union Commission is frankly alarmed at statements by the president of the United States when referring to migrants of African countries and others in such contemptuous terms,” said Ebba Kalondo, the spokeswoman for the African Union. The reaction from the United Nations human rights spokesman, Rupert Colville, was uncharacteristically blunt. He described the remark as “racist.” In Haiti, people took to Twitter to share...