Agoracom administration addresses it. That is what the Help Center video describes;

http://agoracom.com/help-center

I don't know what involvement the Hub leaders have when that button is clicked.

I recently ran across an 'Off Topic' post and hit 'report violation' and I was told that the post had already been reported. If you are the first to report it, I think you have a chance to make comments on what the issue is.