Imagine that you and a group of students held a protest outside of school in the morning. You did not think that you were causing any trouble by doing this, but when you go inside the building the principal tells the entire group that they are going to be suspended for organizing the protest. Question: You believe that you are being unfairly punished and need to convince your principal of this.

you calmly and quietly explain it to him the point and benefits of the protest and hopes he buy it. And if he doesn't have egg his car

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.