Homeland Security assigned her the highest “threat rating” possible

[reorg]

55. I'm sure you know better

than to trust a word this poster says.

Took me three minutes to find (actually, it was the second link I clicked after searching for 'Laura Poitras rooftop'):

In 2006, federal agents began stopping Poitras at airports as she was leaving or entering the U.S., asking questions about her travels and her work; on one occasion, they confiscated her electronic equipment. She began taking notes during the interrogations, and argued when she was told to stop. Altogether, she says, she was detained at least forty times between 2006 and 2012, without ever being told why. It might have had to do with a 2004 incident in Baghdad: American soldiers saw her filming from Dr. Riyadh’s roof during a firefight in the neighborhood, and, according to an article by Peter Maass in the Times Magazine, an officer wrote a report suggesting that she might have had foreknowledge of the attack. (She denied having any, and no evidence suggests otherwise.) A journalist named John Bruning eventually published a book about the soldiers’ battalion, “The Devil’s Sandbox,” in which he repeated the same charge against Poitras. Then again, she told me, the trigger may have been a wire transfer that she sent in 2006 to Dr. Riyadh when his family fled Iraq’s civil war. Bruning’s book claims that the battalion suspected the doctor of being an insurgent. (There is no evidence for this, either.)

http://www.newyorker.com/magazine/2014/10/20/holder-secrets

Laura Poitras on the roof of Archimedes Exhibitions in Berlin. Poitras moved to Berlin to escape the attentions of the US security services. Photograph: Malte Jaeger for the Observer