The group that has "freed" testing animals in labs is the animal liberation front, ALF, that has been tied on numerous occasions to PETA.

PETA did, however, try to get March of Dimes shut down as they support scientific studies on birth defects that use animal testing. While there are things that animal testing should not be used for (cosmetics especially) there are some research projects that could not happen without animal testing, including most of the research in cures for cancer.