The wrongful conviction of leo frank for the death of mary phagan, and his later murder, were representative of which prejudices held by many in the south at that time?

I believe the answer is discrimination of jewish people or prejudice against jewish people because Leo Frank was a jew.

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.