What significance did the assassination of dr. martin luther king, jr. have on the united states?

The assassination of Dr. Martin Luther King Jr. had enormous effects all over the United States. While the civil rights movement was already enjoying significant success, the fact that this leader was assassinated was evidence of the need for protections and equal rights. This meant that more people were convinced of the message and decided to join the movement.

from the conditions of the working class in england by friedrich engels,the main idea is :

the answer is