ANCHORAGE, Alaska — Hollywood screenwriter Aaron Sorkin is calling former Alaska Gov. Sarah Palin a “witless bully” after her cable television travelogue series featured the killing of a caribou.

In Sunday’s episode of “Sarah Palin’s Alaska,” the 2008 Republican vice presidential candidate hunted north of the Arctic Circle. In a Facebook posting, she wrote that unless people have never eaten meat, they shouldn’t condemn the episode.

Sorkin, who wrote the script for “The Social Network,” said in an article for The Huffington Post that Palin didn’t kill the caribou for food, just for fun.

He said he couldn’t distinguish between that and Philadelphia Eagles’ quarterback Michael Vick’s role in a dogfighting ring.

Palin’s lawyer did not immediately respond to an e-mail.