Final answer:
Dr. Martin Luther King Jr. cited economic inequality, de facto segregation, and injustice in health care as evidence of the lack of rights for African Americans. He highlighted the difference between legal rights and lived experiences, with social rights violations like Jim Crow laws enforcing racial segregation.
Step-by-step explanation:
Dr. Martin Luther King Jr. cited several pieces of evidence to describe the ongoing lack of rights experienced by African Americans, despite legal progress. For instance, King spoke of the continuation of economic inequality and de facto segregation that persisted even after the passage of the Civil Rights Act. He highlighted the discrepancy between having legal rights and the actual experience of African Americans, who faced obstructions such as Jim Crow laws that enforced racial segregation in public spaces, and economic disparities as described by leaders like Malcolm X. King also notably emphasized that injustice in health care was among the most shocking and inhumane forms of inequality.
Moreover, civil disobedience and nonviolent protests were urged by King as responses to these racially segregated actions. These examples from King and others illustrate that the echoes of disempowerment from slavery still linger, as seen through various social rights violations and widespread disenfranchisement. The struggle against these injustices forced America to confront its failure to live up to promises of freedom and equality, especially during times of war as stated in the student's task.