We have often seen how leaders who got into power because of backing from their tribe, sect or regional and ethnicities are the most corrupt ones because they knows that their people will vote for them regardless they do any good work or not. Look at African nations and even some Arab nations the reason why they are going through corruption and suffering is because people don't vote based on merit rather on personal relationship like sect, ethnicity or religion and then there comes countries like India and Pakistan where they win based on vote from majority community by instilling fear that minorities gonna rule them if not votes to power and next five years everyone suffers.
I would hold people accountable for being in an creating a corrupt leaders rather than the leaders themself.
Well, this notion is changing with every passing year. Now, people are more aware of what is best for them and their country. The influence of politicians based on caste and fear is fading and people are looking for a representative who is answerable to them. I am talking about Pakistan. In the recent elections, people have voted against the military-backed political parties and in favour of jailed former Prime Minister Imran Khan. Khan's backed independents won over 160 seats as per early estimates and the military rigged the elections in broad daylight to cut Khan's independents to around 90. They won despite a severe crackdown on the Khan's party, kidnapping, snatching nomination papers, sealing and demolishing their businesses and houses etc. Things are continuously changing and it appears that the army is losing control over the people.