A historical marker is shown in front of the former F.W. Woolworth store at the International Civil Rights Center and Museum in Greensboro, N.C. Four college freshmen walked into a Greensboro, N.C., dime store on Monday, Jan. 1 1960, bought a few items, then sat down at the "whites only" lunch counter, and sparked a wave of civil rights protest that changed America. (AP Photo/Chuck Burton)

Question: Have you ever taken part in a protest or demonstration of any kind? When? Where? Why? Did the demonstration have an effect?