Were demonstrators in the 60s using intimidation and fear? Should they have had a dialogue with the people who considered them inferior humans, and did not perm

Were demonstrators in the 60s using intimidation and fear? Should they have had a dialogue with the people who considered them inferior humans, and did not permit them to sit on the same stools white people did? Demonstration does not need to be polite, especially when the other side has been anything but. Speaking out en masse is a perfectly ordinary and effective form of protest.