Stephens gave an important speech which came to be known as the Cornerstone Speech. In this speech, he reflected on the issue of slavery by defending it that fundamentally caused the split the United States into two - the North and the South. In his speech, he said that the government in the South establish on the idea that slaves were inferior to whites.
America was supposed to be part of Britain, but when the soldiers kill the people, it made them think that they were separated from Britain. It made the people loathed the British people, and it showed them that they didn't have many rights, since all they were doing was protesting.