SOCM -Statewide Organization for Community eMpowerment [pronunced "Sock 'em"]
http://www.socm.org/
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formerly Save Our Cumberland Mountains)
SOCM is a member-run organization that encourages civic involvement and collective action so that the people of Tennessee have a greater voice in determining their future. The mission of SOCM is to empower Tennesseans to protect, defend, and improve the quality of life in their communities across the state. SOCM is working for social, economic, and environmental justice for all. We are committed to the journey of becoming an anti-racist organization. Recognizing our interdependence, SOCM is committed to overcoming social and institutional racism and embracing our diverse cultures."
(More info about the organization and its activities, local chapter meetings, volunteer opportunities, etc., at link. SOCM recently partnered with the Sierra Club in suing the owner of multiple coal mines for failing to comply with mandated water pollution disclosure.)