The only possible way to deal with disease is to wipe it out globally. You can't leave pockets of it anywhere to restart the infection, even if those pockets are in places where the people have dark skins. Racist attitudes to disease control mean polio and malaria continue to stalk the planet when we had to technology to wipe them out decades ago. To sue the South African government for using generic drugs to help contain it. If AIDS is to be contained, it must be stopped everywhere.
Dictatorships suppress their citizens.
Dictatorships are more likely to behave in ways that are planetarily irresponsible. Democracies should work to gradually eliminate all the remaining dictatorships. What crime did the citizen of a dictatorship commit to deserve such a fate. Other Species Humans act as if they were the owners of planet earth. Their superstitious religions foster this childish egotistical view.