"Information privilege is the idea that access to information can be based on an individual’s status, affiliation, or power. Access to information can be blocked by various means including geography, access to technology, financial standing, and identity. The type of information that is obstructed is often the most skilled, researched, and credible. This creates a power dynamic where there are parts of a society who can benefit from this access and those who are marginalized because of a lack of access" ("Information Privilege", Wikipedia)
See Booth's blog post "On Information Privilege" and Saunders' article "Information Literacy and Social Justice: Why and How"