I need to know in depth why slavery was a paradox!

One of the reasons why slavery was a paradox in the United States was because "it went against ideals of freedom on which the nation was founded" since the founding fathers always trumpeted ideas of "individual liberty and freedom"

One of the reasons that slavery was a mystery in the U. S. was because "it was against the ideals of freedom on which the nation was founded," since the founding fathers often trumped "private freedom and freedom" concepts.