Story highlights Carson said the use of fetal tissue for medical research isn't necessary

Carson has increased his criticism of Planned Parenthood after a series of string videos were released

Washington (CNN) Ben Carson on Tuesday slammed Planned Parenthood, telling CNN's Jake Tapper that the women's health organization "doesn't seem to understand the sanctity of human life and is willing to destroy that."

Appearing on "The Lead with Jake Tapper," Carson added that Planned Parenthood is "an organization whose founder believed in eugenics," a reference to Margaret Sanger, and added, "even today, the plurality of their clinics are in minority communities."

The comments from Carson, a retired neurosurgeon, come after the release of a third sting video featuring an interview with a woman who says she worked in a clinic procuring tissue from aborted fetuses.

Carson said the use of fetal tissue for medical research isn't necessary.

"Virtually everything that can be attributed to progress by using fetal tissue can also use other types of tissue," Carson said. "If it were the only way to do something and there was no other way, there might be an argument. But under these circumstances, there isn't a legitimate argument."

Read More