COMON$'s Journal: Bigot Sniping?

I love getting into discussions of opposing viewpoints on Slashdot for the most part this seems like an intelligent bunch. It is edifying and entertaining when the individual is well thought out, and often enough I get some new viewpoint on a subject. However, every once in a while I feel like I have been 'rick rolled' and am left feeling raw. You get geared up for an intelligent conversation with an individual of a different opinion and it soon becomes apparent that you have just engaged yourself in a conversation with a bigot.

You know what I mean, that guy/girl who gives your opinion a bad name, extremists, people emotionally attached to an idea, no rational whatsoever, just wanting something to rant about.

There needs to be a term for this scenario and the people in it. Bigot Sniping?