Common Cause is an American nonprofit organization.
Common Cause is a nonpartisan, grassroots organization dedicated to upholding the core values of American democracy. We work to create open, honest, and accountable government that serves the public interest; promote equal rights, opportunity, and representation for all; and empower all people to make their voices heard in the political process.
Mission statement via commoncause.org
Media activism
Their role as a media watchdog organization that monitors and reports on media issues primarily involves internet access and net neutrality. They are also critics of media consolidation and advocate for freedom of the press. They are not specifically focused on transgender issues.
Resources
Common Cause (commoncause.org)