Lisa Kudrow Learns About Her Jewish Heritage (VIDEO)

On 'Who Do You Think You Are?' (Fri., 8PM ET on NBC), Lisa Kudrow traveled to Poland and visited the mass grave site of her great-grandmother. It proved to be an emotional journey for Kudrow, but one she's glad to have taken.

"These people were no threat, they were nothing," said Kudrow. "It's just the ravings of a madman who decided that Jews didn't fit into the way he saw the human race."

Watch the video after the jump.On 'Who Do You Think You Are?' (Fri., 8PM ET on NBC), Lisa Kudrow traveled to Poland and visited the mass grave site of her great-grandmother. It proved to be an emotional journey for Kudrow, but one she's glad to have taken. "These people were no threat, they were nothing," said Kudrow. "It's just the ravings of a madman who decided that Jews didn't fit into the way he saw the human race."