By Mara Siegler

Ben Affleck insisted on censoring the fact that one of his ancestors owned slaves from PBS show “Finding Your Roots,” the Sony email hack has revealed.

In a hacked Sony email from July 22, 2014, now available on WikiLeaks, the show’s host, Henry Louis Gates Jr., writes to Sony USA chief Michael Lynton asking for advice: “One of our guests has asked us to edit out something about one of his ancestors–the fact that he owned slaves. Now, four or five of our guests this season descend from slave owners, including Ken Burns. We’ve never had anyone ever try to censor or edit what we found. He’s a megastar. What do we do?”

Lynton’s advice was to take Affleck’s family secret out of the show, as long as nobody would find out. The Sony chairman and CEO writes, “On the doc the big question is who knows that the material is in the doc and is being taken out. I would take it out if no one knows, but if it gets out that you are editing the material based on this kind of sensitivity then it gets tricky.”

Gates, who is friends with Lynton and wrote “I need your advice,” goes on to admit that hiding facts would be a violation of PBS rules. “As for the doc: all my producers would know; his PR agency the same as mine, and everyone there has been involved trying to resolve this; my agent at CAA knows. And PBS would know. To do this would be a violation of PBS rules, actually, even for Batman.”

Read More Affleck demanded PBS program hide his slave-owning ancestor | Page Six.