Hillary Clinton has bashed Ann Coulter for her "vicious, mean-spirited" attack on 9/11 widows who criticize President Bush.

Coulter had said in her book, "Godless: The Church of Liberalism," that the group acts "as if the terrorist attacks happened only to them," and that "I've never seen people enjoying their husbands' deaths so much."

Reports the AP:

Clinton, who has felt Coulter's wrath over the years, responded angrily on Wednesday.

"Perhaps her book should have been called 'Heartless,'" the senator said. "I know a lot of the widows and family members who lost loved ones on 9/11. They never wanted to be a member of a group that is defined by the tragedy of what happened."

The New York Democrat and former first lady said she found it "unimaginable that anyone in the public eye could launch a vicious, mean-spirited attack on people whom I've known over the last four and a half years to be concerned deeply about the safety and security of our country."

The senator spoke after delivering a speech on protecting children from exposure to sex- and violence-saturated media.