If someone wanted to challenge the plessy v. Ferguson decision, what evidence would they need to gather

The economic challenges on service providers

Explanation:

The Plessy vs Ferguson decision was a supreme court judgement that legalized segregation on the grounds that both facility been used by both races have to be of the same quality. the judgement was later dubbed " separate but equal " in the society.

The segregation laws lasted for over a century because it barred anyone form challenging it, before the supreme court later overturned the decision.

To challenge the initial supreme court decision on Plessy vs Ferguson case the evidence needed is the economic challenges it poses on the society. for example: some railroad company was on the side of Plessy because of the economic challenges of having to provide and maintain separate buses for each race hence the decision posed severe economic challenges in the society for business who offer public services

i belive the classic sword and a shield would do