Which of the following statements about Martin Luther King is INCORRECT? [origin

Forty years ago, African-American civil rights leader, the Reverend Doctor Martin Luther King Junior, (21-1) was shot and killed. He died on April 4, 1968, in Memphis, Tennesee. On Friday, in that city, presidential candidates, civil rights leaders, labor activists and thousands of citizens came together. (21-2)They honored Doctor King for leading the struggle for racial equality and economic justice. During the 1950s and 60s, Doctor King had led a campaign of nonviolent protests. His work was aimed at ending racial separation and discrimination against African-Americans. (22) His efforts led U.S. to pass the Civil Rights Act of 1964. That year, he won the Nobel Peace Prize.