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Newsweek accomplished at least one thing by running a cover story calling the country’s critics of President Obama “dumb” — they awoke the mama grizzly.

Former Alaska Gov. Sarah Palin took to Twitter on Tuesday to criticize the magazine and writer Andrew Sullivan for piece titled “Why Are Obama’s Critics So Dumb?” And her beef with the writer and liberal-leaning weekly is personal. Sullivan is infamous for calling into question whether Palin’s son, who has down syndrome, really is her own child.

Directing her message to “@Newsweek,” Palin wrote, “Know what’s truly ‘dumb’? Giving a cover story to the TrigTruther conspiracy kook writer who thinks I didn’t give birth to my son.”

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