You might also look at this thread on DailyKos, where sentiment among members of "The Left" ran about 25 to 1 _against_ those protesters.

http://www.dailykos.com/storyonly/2007/3/20/03546/7421

Shall I point you at some of the comments on LGF from two weeks ago, where upon learning that KSM claimed there had been assisination plots discussed against former Pres Carter, commenters wished they had succeeded in killing him? Or that Rep Ellison (D-MN) be put in jail for speaking Arabic? Or reacted to an assault (including the use of brass knuckles) on three Palestinian students at Guilford COllege in January with comments like "Good! Run them all out of our country!"? They are expressions representative of The Right, after all.