It isnt that they have control over other human beings, it is that they have control to maintain a city/public park... There are rules on how to do certain things. There are channels he could of gone thru to do it if he wanted to. They have certain procedures on doing it. Like I said, he ended up getting debris everywhere. He caused more work for people.
It is similar to backseat modding. Rather than someone take something into their own hands, people are expected to follow a certain set of rules and procedures to deal with an issue or problem (I.E the report button or to PM a mod).
If someone did not follow these rules, and decided to take matters into their own hands, then that person would be dealt with accordingly. Not because they may have handled the problem improperly, but because they didnt follow the rules & regulations on how to handle that situation