Movements can significantly affect governance and public policy by mobilizing citizens around specific issues, leading to social change. They raise awareness, advocate for particular reforms, and can influence legislation, often by engaging in protests, lobbying, or public campaigns. Successful movements may shift public opinion, compelling policymakers to address their demands. Examples include the civil rights movement, which reshaped laws around equality and justice. Overall, movements act as catalysts, highlighting societal issues and prompting governmental responses that reflect the voices of the people.