i think its difficult to discuss a gold mining company without discussing politics and economics.
if i may... gold is money. its a currency. to discuss gold is to discuss all things social, political and economic. in the case of mexico, its important even to discuss gang-violence. perhaps the gang violence is near your mine.
let people talk about what they want to talk about. if we're mature adults, and most of us are, i assure you the discussions will be constructive.
if people are not being mature adults... well that's a different story and you as a hub-leader have a job to do. even if its action against another hub-leader.... ESPECIALLY if its an action against another hub-leader.