What was the supreme court's decision in plessy v. ferguson? what effect did this decision have?

In Plessy v Ferguson (1896), the Supreme Court upheld the legality of segregated public facilities based upon race.

This led to the policy of "separate but equal" which meant that throughout the United States, public and private organizations were able disallow people of color from schools and bathrooms as long as they had separate facilities for people of color.

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