It's the people in the system + The System... not the People running it alone. The easier to change would be the SYSTEM...if we need to change the People running it, we'll need Ethnic Cleansing to bury it down to the ground (which is very impossible to do).
If we want change, We start with one element at a time. Start with the SYSTEM itself... And no, the "PEOPLE" element is NEAR IMPOSSIBLE to change.