Phippsburg residents Christopher Sewall and Mary Gibson will present the documentary film “American Outrage” at 7 p.m. Tuesday at the Frontier Cafe at Fort Andross Mill, Brunswick.

Filmed in Nevada, the film by George and Beth Gage chronicles the ongoing struggles of the Western Shoshone sisters, Mary and Carrie Dann, to protect their homelands in the American West from both the federal government and corporate interests intent on seeing these lands strip-mined for gold or condemned as the nation’s high-level nuclear waste dump.

Following the film, Sewall and Gibson will host a discussion and question-and-answer session.

For 12 years, Sewall volunteered and worked as a community organizer and environmental consultant for the Western Shoshone Defense Project, a tribally directed nonprofit organization. Gibson is a Western Shoshone tribal member and relative of the Dann sisters.

A donation of $5 to $10 is requested. A portion of the proceeds of the Frontier Cafe showing will be donated to the nonprofit Western Shoshone Defense Project.