Actually, after consideration, I think this fool may be right in a "stopped-clock" sort of way, though not in the sense she means it I'm sure.
Americans always tend to come together to one degree or another after we suffer an internal blow. It is natural for us, and the seeds of that coming together were planted on the morning of January 8. It may have only been for a week, or a day or two, but the door was opened a crack and there was room to get a foot through. It may have allowed a discussion of the nation's collective psyche when it comes to politics, even if just a superficial discussion. But it would have been something, anything, one thing that this nations citizens could find common ground on. Mental illness, violence, you name it.
Instead, before the sound of the last ambulance siren faded in the distance, certain elements of the Left saw that cracked door and entered it not with reason, but with a battering ram. Before the victims' triage was completed, the attack had began. Opportunity was blown out by cheap political opportunism. With no evidence whatsoever the accusations were hurled, the false connections established, the slanderous memes circulated. Conservatives were forced to the defensive by a non-stop barrage of vile and baseless charges, and the tone was set. Whatever chance there was for that coming together was lost through another polarization forced on us by the self-styled "progressives". How did they expect someone so attacked would respond, with passivity and silence? Then they have nerve to portray this resistance as a tacit admission of guilt. What's worse is the mindless, evidence-free attacks came not only from the usual supects in the moonbat blogs, but also from so-called "respected" figures in the media, government and academia.
So in this sense, a point of no return may indeed have been reached. Even the most optimistic of those on the Right must now see that there is no trusting, no reason to place faith in the reasonableness of the Left. This may well be the final nail in the coffin of dialogue, for without that trust there can be no dialogue. A hand that is bitten before it is even extended is a hand that will remain clenched in a fist. Now the Left has no one but themselves to blame.