Final answer:
The assassination of Martin Luther King, Jr.
Step-by-step explanation:
The event during the Civil Rights era that did the most to focus the attention of white Americans on the struggles of African Americans in the South was the assassination of Martin Luther King, Jr.
King's death in April 1968 in Memphis, Tennessee, sparked widespread riots and violence across the nation as angry African Americans expressed their shock and anger at his murder. These riots drew widespread attention from white Americans.
The assassination of Martin Luther King, Jr. served as a turning point in public perception and raised awareness of the ongoing struggle for racial equality in the United States.