How did the thoreau’s “civil Disobedience” pave the way for significant events later in history?

What is the central idea in this advice from branch rickey to jackie robinson?  

100 points and ! plz answer ! think of an intense argument you had or witnessed sometime in your life. close your eyes and remember every detail. to turn this into a dramatic scene you will need to make changes that will make it make more sense to the audience. 500-600 words a description of the set up that explains what happened before the scene diction that matches the characters character objectives and obstacles are clearly conveyed a scene that escalates in dramatic intensity diction that is appropriate to the audience words that are not wasted in idle chit chat action (stage directions) that enhance the scene proper formatting for drama

Which sentence from the article best supports the statement above