"A few facts to consider:
1. The agent who was killed died while shielding Sgrena with his own body, according to Reuters. "He leaned over me, probably to protect me, and then he slumped down, and I saw he was dead," she said. This could mean one of two things: Either the agent was reacting as trained to the gunfire and was protecting his principle, or he saw that she was the target of the fire.
2. Pier Scolari, companion to Sgrena, has stated the attack was deliberate, according to Agence France Presse. "The Americans and Italians knew about (her) car coming," Scolari said. "They were 700 meters (yards) from the airport, which means that they had passed all checkpoints. Giuliana had information, and the US military did not want her to survive."
3. The chief editor of Sgrena's newspaper Il Manifesto, Gabriele Polo, branded Calipari's death a "murder". "He was hit in the head," he said.
4. For a journalist like Sgrena to be deliberately targeted, a motive would have to exist. An examination of the work she was doing in Iraq, particularly about the annihilation of Fallujah, makes it clear that she was disbursing information the U.S. military and civilian command structure do not want widely known.
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http://abutamam.blogspot.com/2005/03/was-giuliana-sgrena-deliberately.html