"Conservatives believe that they have hit upon a winning formula for such attacks: mobilizing people to dig up dirt, trumpeting it on talk radio and television, prompting Congress to weigh in and demanding action from the Obama administration."

The NYT puts the ACORN story in context:

Conservative advocates and broadcasters were gleeful about the success of the tactics in exposing Acorn workers... 

The Acorn controversy came a week after the resignation of Van Jones, a White House environmental official attacked by conservatives, led by Glenn Beck of Fox News Channel, for once signing a petition suggesting that Bush administration officials might have deliberately permitted the Sept. 11 terrorist attacks. 

There was more than that to the Van Jones story!

Even before Mr. Jones stepped down, Mr. Beck had sent a message to supporters on Twitter urging them to “find everything you can” on three other Obama appointees.

Conservatives believe that they have hit upon a winning formula for such attacks: mobilizing people to dig up dirt, trumpeting it on talk radio and television, prompting Congress to weigh in and demanding action from the Obama administration.

Conservatives came up with that? It's almost as if they could come up with a list of tricky rules for advancing their cause, something like pick the target, freeze it, personalize it, and polarize it. Cut off the support network and isolate the target from sympathy. Go after people and not institutions; people hurt faster than institutions. (This is cruel, but very effective. Direct, personalized criticism and ridicule works.)