In Africa we have a big problem,politics have become deadly business,all leaders are doing anything within their power to remain in power even if it means people dying and living in grossly deplorable states while they and a few enjoy life.
Thomas Sankara is a good counter-example: an African leader who was economically modest and pursued a serious multi-year anti-corruption campaign. Unfortunately, this anti-corruption campaign was very unpopular among powerful capitalist interests, both within Burkina Faso and abroad.
This post might be of use to you as you explore this topic: https://www.osiea.org/amplifying_voices/an-african-perspective-on-corruption/
True, but Sankara jailed his opponents as well, and effectively banned the public sector trade unions. Surely our search for counter-examples should place some stock on a commitment to pluralism?
Constructive trust is the answer! African leaders should be held as constructive trustees with regard to their corrupt practices and unjust enrichment.if they become aware that they cannot be beneficiaries of the proceeds of their corruption, they will shun corrupt practices.