Botswana is one of the few countries that focused little on revenge politics, and they are a shining example of forgiveness and tolerance (relatively speaking, they do have problems - as does every place on Earth). South Africa was doing well, but sadly Mandela couldn't stay in power forever. Africa isn't the only place where you see it, why we've just witnessed a cousin of that political style come into power in a country that has significantly further to fall. They even started with spending money and bureaucracy on renaming places, which is my personal canary.
Source: Zimbabwean-South African-American