Video https://www.youtube.com/watch?v=IIT0ra9-mTc   After watching the videos about the Selma-Montgomery march (1965) and the Delano-Sacramento march (1966), and recalling Gandhi’s Salt March (1930), answer the following question with at least 250 words: Why is a lengthy (multi-day), nonviolent march a potentially powerful act of protest? What does it accomplish?