According to justice brown’s opinion in plessy v. ferguson, what did he consider segregation to be?

Segregation was not inherently a violation of the Fourteenth Amendment because it did not deny services or citizenship rights.

Justice Brown stated segregation is not a violation of the Fourteenth Amendment (which grants citizenship rights) if the facilities are equal. By providing equal access to Constitutional rights even if in segregated facilities, the segregation is allowed. If the laws state for unequal treatment then segregation would be in violation of the Fourteenth Amendment.