What do you believe is the most important element of civil disobedience?

The fact that it was strongly nonviolent, due to the fact that if the media saw a black person fighting back against a white person physically, they would zoom in (not literally) on the black person and omit the first move that provoked it.

Repeated measures design

Explanation:

Repeated measures design is categorized as a design used in researches. Same variable is measured multiple times with the matching subjects. Variations in conditions are allowed that are recorded for two or more than two times. Measurements are taken on repeated terms. These variations in measurements helps in analyzing the results and applying the in the applications.  

In the given excerpt, the procedure of repeated measures design has been represented. Every participant's sorting technique and memory is tested.