averrrrr cual es la pregunta?
Mrs. White says '"Don't let it in!"'
<em>Corroboration </em>is the evidence that is backed up by the initial evidence. For example, a witness says that I saw a man in black coat entering the store and buying a bag. Later, the saleswoman, who is another witness testifies that she sold the bag to the man in a black coat. In this case, both witnesses confirm the situation and the evidences coincide. When there is no corroboration, there is not any available source to confirm the same information.
They were fighting against segregation. They wanted their rights to be the same as whites because they were all people.