See, here's the thing, Mr/Ms incumbent.
The folks who are showing up at your town hall with serious concerns/questions/agendas ARE the folks who will be actively involved in your next re-election campaign, either for you or against you, but they WILL be involved!
These are the folks who are not content to sit on the couch and watch television, blindly following your agenda because they are ignorant, lazy, apathetic and too unconcerned to do something about it. These are the folks who WILL do something about it.
I would think that a concerned REPRESENTATIVE would listen and consider representing instead of ignoring, tossing out insults and labels at Americans who are expressing themselves according to their Constitutional right to be heard.
Sticking to your own self-seeking agenda, especially if your agenda includes being re-elected, might turn out to be folloy. Listening ONLY to those who agree with you paints you as a fool and a bigot.
Better to listen and truthfully respond, than to be sent home. Remember, EVERYTHING you do, every vote, is a matter of record, and sometimes records are played loudly!