I am not sure what the solution is, but maybe something like a forum for each AMA district might work well. Then people would basically be commenting on issues that are effecting there own district. It would be easy to spot a Troll that way if a person was just jumping from district forum to district forum to try and stir things up. People might also be more apt to be friendlier to those people they are debating within there own district. Just throwing around some ideas.