Grace Lee, best known for her 2005 autobiographical film "The Grace Lee Project," returns to documentary filmmaking with "American Revolutionary: The Evolution of Grace Lee Boggs." The film examines the legacy of the longtime activist, who dedicated her life to a wide range of social movements, including the African American civil rights movement, labor rights, feminism, environmental justice and Asian-American causes.

At 98 years old, Boggs, as seen in this exclusive clip from the film, is still as sharp and fearless as ever -- even questioning the meaning of revolution, which is a principle she has long held close to her heart.

"American Revolutionary: The Evolution of Grace Lee Boggs" is scheduled for a limited theatrical release at the Pasadena Laemmle Playhouse 7 from June 20-26th. The film will then make its television debut on June 30th, as part of the PBS series POV.