Rachel Maddow shows how extremist hate groups prey on the weak minded with conspiracy theories and encourages government agencies, particularly the FBI, to be more transparent in order to not leave information gaps that can be readily filled by conspiracy theorists.

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Increased FBI Oversight Sought As Boston Bomber Questions Mount

Congressman Bill Keating, member of the House Committee on Homeland Security, talks with Rachel Maddow about the need for greater transparency from the FBI and other law enforcement agencies, and the role of Congress in holding federal law enforcement accountable.

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