One of the people he spoke with was Atef Abu Roub, a researcher for B'Tselem. At the 5:50 mark you can hear him say that the Holocaust was a "lie."
B'Tselem just admitted on their Facebook page that the story is true.
When the organization asked Abu Roub whether the video was accurate, he answered that he was merely quoting someone else that denied the Holocaust, but he wasn't saying it himself. Then the interview in context was released, and it was clear that not only is Abu Roub a Holocaust denier, but also a liar.
Perfect qualifications for "human rights" activists!
Keep in mind that these are the kinds of researchers B'Tselem relies on to tell them the truth about what is going on in Gaza. B'Tselem is one of the organizations that the UN relied on for statistics of how many "civilians" were killed in the war over the summer.
B'Tselem said that it is disgusted by the incident and will investigate the matter.
This is far worse than when Human Rights Watch researcher Marc Garlasco was discovered to be a Nazi memorabilia enthusiast. If B'Tselem doesn't fire Abu Roub, and soon, it tells us more about B'Tselem than about Abu Roub.
(h/t Gidon Shaviv, Bob K)