MARKET LOGIC | While Chelsea Manning, Julian Assange, and Edward Snowden have each peeled layers from the oniony concept of information privacy, none of them held such conflicted ideologies as Brandon Darby, a former radical activist and Hurricane Katrina aide revealed to be an FBI informant. In a flawed but intriguing documentary by Jamie Meltzer, INFORMANT attempts to get at the real allegiances that motivated Darby, who has since been embraced as a sort of sainted figure of the right. Playing Friday through Sunday (today at 2) at PMA Movies in the museum. 7 Congress Sq. 207.775.6148.