Go to the Marh 17 "The Brad Blog" and read it to see just how underhanded O'Keefe and company were.
When dealing with a criminal organization, you have to be "underhanded". Just as the FBI, Drug Task Force, Those fighting organized crime, etc.
Any criticizm of anyone who fights these Acorn vermin will tend to make most honest people want to puke.
Did you read it?
The "crime" ACORN committed was to register poor people to vote, many of whom were black and tended to vote Democratic. Keeping a voter off the rolls who will vote against you is the same as you voting twice.
The allegations resulting from the undercover hoax were all dropped as far as I can tell