I believe the technical term is agent provocateur. Sometimes the light of day is a death sentence for them...
I noticed that several 09/2008 sign ups on this thread and defending Parry regarding the ‘attack ‘negros’ and blame Republicans’ comment saying they don’t see it or we are reading too much into it (even though it is pretty clear). Ironically, that is about the same sign up date as the posters of most of the vile comments on the thread which started this whole thing.