Republican 2016 presidential candidate Ben Carson recently made the assertion on an Iowa conservative radio show that the “purpose” behind Margaret Sanger’s founding of the abortion giant Planned Parenthood was to “eliminate black people,” and also questioned whether or not President Barack Obama realizes that.

While the 63-year-old retired neurosurgeon was going in and out of reception during his phone interview with radio host Jan Mickelson on WHO Radio in Des Moines, Mickelson played a clip of an Obama speech from last year where the president defended Planned Parenthood and even said “Thank you Planned Parenthood. God bless you.”

When Carson re-established cell phone connection, he was asked to comment on the president’s remarks. “You wonder if he actually knows the history of Planned Parenthood and Margaret Sanger, who was trying to eliminate black people,” Carson replied. “That was the whole purpose of it.”

Mickelson then played an audio clip of 2016 Democratic frontrunner and former Secretary of State Hillary Clinton from 2009, when she was awarded the Planned Parenthood Margaret Sanger Award. In her acceptance speech, Clinton gave high praises to Sanger even though Sanger was known for advocating racist ideals. “I admire Margaret Sanger enormously, her courage, her tenacity, her vision,” Clinton stated. “I am really in awe of her.”

Mickelson responded by saying how hypocritical it is for people to destroy Confederate flags and Confederate tombstones but still continue to honor Sanger. Carson replied to the Clinton soundbite by stating that the soundbite will most surely be used against her in the general election, no matter who the Republican nominee turns out to be.

“I am delighted to have her saying that on tape because if I am a nominee and we are in the race, believe me that quotation that she just said will come back and it will be in a context that people can understand,” Carson argued. “She has just done us a great favor right there… That is a ticking time bomb.”