Social Movement: A large group of people who are organized to promote or resist some social change. It's like a team in a multiplayer online game working together towards a common goal.
Civil Rights Movement: A struggle by African Americans in the mid-20th century to achieve equal rights under the law - similar to unlocking an achievement that should have been available from the start in a video game.
Progressive Movement: An early 20th-century U.S. political and social movement seeking various forms of progress or reform as if trying to level up society's character stats.