Final answer:
McKinley Burnett was searching for the right plaintiff to challenge segregation laws in the United States and bring attention to racial discrimination and injustice faced by African Americans.
Step-by-step explanation:
McKinley Burnett, an African American attorney and civil rights leader, was planning to find the 'right plaintiff' to challenge segregation laws in the United States. McKinley Burnett was searching for the right plaintiff to challenge segregation laws in the United States and bring attention to racial discrimination and injustice faced by African Americans.
He aimed to identify an individual who had suffered from racial discrimination or segregation and who could effectively represent the cause in a legal case. By finding the right plaintiff, Burnett hoped to bring attention to the injustices faced by African Americans and ultimately challenge the legality of segregation.