Why was the struggle for civil rights more difficult because of the separate but equal doctrine

The answer is stated below.

Explanation:

The notion of separate and equal doctrine are rooted firmly in a white supremacist doctrine, which is the belief that blacks  are somehow inferior to the white counterpart which is evident from In the pivotal case of Plessy v. Ferguson in 1896. According to this judgement segregation was not discrimination. African Americans were provided with equal rights and freedom but treated as second class citizens. Therefore their civil rights were denied by manipulating the laws.

answer: nope

explanation: because theirs barely anyone on here to you. but let me see the question. maybe i can , if i know the answer!

a case involving the laws of a single state.