Why is a Palin speech any different?
Because Obama's poll numbers are swirling the toilet. The radical left wing agenda in Washington has had the same effect on the Democrat party as a whole and so they must now resort to what they know best, go negative - the Politics of Personal Destruction.
The Radical Left is just following their own Rule Book, Saul Alinsky's Rules for Radicals:
RULE 1: "Power is not only what you have, but what the enemy thinks you have."
They have total control of Washington, executive branch, both houses of congress and filibuster proof majorities, but they can't get any of their radical agenda through Washington. As one of the Radical Lefts hero's would say, they are a paper tiger.
RULE 2: "Never go outside the expertise of your people."
The radical left certainly excels at being insulting, vile and derogatory.
RULE 3: "Whenever possible, go outside the expertise of the enemy."
As Popeye has stated, its difficult, if not impossible, to repair the destruction of someones character.
RULE 4: "Make the enemy live up to its own book of rules."
Attacks on Palin, and republicans in general, for failing to live up to the ideals they preach concerning family values are a regular talking point for Radical Leftists.
RULE 5: "Ridicule is man's most potent weapon."
Pretty self explanatory... They do what they do best.
RULE 6: "A good tactic is one your people enjoy."
The Radical Left certainly loves circle jerking to attacks on Conservatives and Republicans.
RULE 7: "A tactic that drags on too long becomes a drag."
They cycle through victims, Rush, Palin, McCain... Republicans in general, they seem to think that keeps it fresh.
RULE 8: "Keep the pressure on. Never let up."
The Radical Leftists around here take that one to heart... no matter how wrong they are or how many facts stack up against them, they keep plugging away at their talking points and pushing their collectivist agenda.
RULE 9: "The threat is usually more terrifying than the thing itself."
This goes into their belief that perception is reality, rather than reality being reality. They carefully attempt to craft the public perception through polling and focus groups, a trick Republicans have picked up on but make the mistake of doing it out in the open rather than behind closed doors.
RULE 10: "If you push a negative hard enough, it will push through and become a positive."
I call this the "lesser of two evils" rule. Since the Radical Left are poisonous snakes slithering across the ground, they have to pound all opposition into the ground far enough to give the perception that the opposition is beneath them.
RULE 11: "The price of a successful attack is a constructive alternative."
They have one answer for every problem: More Government. That's the only "answer" they ever offer.
RULE 12: Pick the target, freeze it, personalize it, and polarize it."
They are doing this with Glenn Beck at the moment by trying to peel away his commercial sponsors. They do this with every target and Palin is no exception. If they can piss and moan loud enough, if they can go negative on her long enough, she too will start to lose "sponsors" because the speaking engagements will dry up... At least that's their goal and that's what they're hoping will happen. Its not enough that she's out of office, they want her broke, ruined and miserable because she needs to appear lower than the poisonous snakes pounding her into the ground.