Sarah Palin's invocation of the monstrously anti-Semitic "blood libel" that suggested Jews were responsible for kidnapping Christian children and killed them in rituals, which served as justification for the pogroms in Russia, ended whatever slim viability she might have possessed to be president.
Did she make some points in this speech? Yes, mainly that there was no explicit or implicit connection between her rhetoric and the actions of Jared Loughner in Tucson. Did she recognize, however, that heated rhetoric, heard by the wrong ears, could conceivably be twisted by some into violent action? Not even a little. Did she acknowledge that using the image of cross hairs of a rifle's scope as a way to identify a Democratic member of Congress who could be vulnerable to a challenge by a Republican was, at best, indelicate? Hah!
"Don't retreat. RELOAD."
Never apologize, never admit wrongdoing, never reach a hand across the aisle with humility (unless there's a great big hunting knife in your other hand which is hidden behind you).