Planned Parenthood’s largest corporate donor, liberal group Credo, is warning that the drip-drip of damaging footage could lead to a sequel to the ACORN scandal in 2009.

In that campaign, conservatives used hidden cameras to produce viral videos that suggested officials at the Association of Community Organizations for Reform Now (ACORN) were advising people masquerading as a prostitute and a pimp on how to circumvent tax laws.

The nonprofit group, which had been involved in voter registration drives, disbanded after months of negative publicity.

“We saw what happened with ACORN, and it happened so fast and it happened without enough pushback from Democrats, and our goal is to make sure that doesn’t happen again,” said Heidi Hess, campaign manager for Credo.

“It does have that feeling,” Sen. Barbara Boxer (D-Calif.) said when asked about the comparison to ACORN. “When people come and secretly tape you, it’s a pretty low form of harassment in my opinion.”