I have noticed a disturbing trend on Steemit among some users. I have witnessed a few cases where users of higher SP or reputation would flag lower level users. Flagging can definitely be a good tool to prevent inappropriate content, but it should be used with great care!
Steemit involves money. This means that when you flag a user you are potentially jeopardizing their source of income. If they are doing something terribly wrong, that is fine, but it cannot be something like they have a different opinion or world view.
If person is powerful on Steemit, it means they have a lot of SP. Which also means that they are invested in making Steemit better. Therefore, it is counter productive to abuse power in such a way that will turn people away from using Steemit.