I respectfully disagree. Not on the timing of trolls appearing on FR threads. That has good credibility. I disagree that national unity has frayed. If anything national unity has increased but judged by media coverage and the organized presence of opposition it doesn't appear to be as seamlessly unanimous as it did just after 9/11/01. All voices of surrender were ignored then but they existed and the numbers probably have not changed.
As far as I'm concerned they are mostly irrelevant. The cowed bleating of sheep and the bilious howls of traitors and enemies within.