This is opera and in Italy. So I fail to see the issue here. Not every country is stuck with baggage like the Americans have over slavery.
Faccetta nera, bell’abissina
Aspetta e spera che giĆ l’ora si avvicina
Quando staremo vicino a te
Noi te daremo un’altra legge e un altro Re
https://m.youtube.com/watch?v=OYO9FOyLggE