All of this amendments, called the civil rights amendments, contributed to abolishing slavery.
Mostly one could say protest. Lots of people protest war. They believe it is pointless and wrong. While war is a terrible things it must happen sometimes. There are some wars though that can be argued to be pointless and wrong.
This is Hemingway's belief that issues should be dealt with stoically and heroically. This can be seen in The Old Man and the Sea in the way the man never gives up and fights the Fish with all that he's got.
George Washington strongly believed that foreign involvement wasn't in the United States' best interest -- it would only lead to economic hardship and instability. The U.S. military was too weak and war-weary to fight another battle so soon after the American Revolution.