Why did mississippi likely make it illegal to promote racial equality? ?

Mississippi laws make practically illegal the racial equality since they wanted to keep an economic, moral and social white superiority.

Explanation:

As the civil rights started to demand equality to all races, many southern states did not agree with this law, and decided to have their own state rules about the interaction between white and black people, being one of the most important things to make illegal the multiracial marriages and the procreation of children in this context.

this answer was editing it cause i couldn't delete!

not concrete, existing in thought or as an idea but not having a physical or concrete existence