Slavery was prevalent in many West and Central African societies before and during the trans-Atlantic slave trade. When diverse African empires, small to medium-sized nations, or kinship groups came into conflict for various political and economic reasons, individuals from one African group regularly enslaved captives from another group because they viewed them as outsiders. The rulers of these slaveholding societies could then exert power over these captives as prisoners of war for labor needs, to expand their kinship group or nation, influence and disseminate spiritual beliefs, or potentially to trade for economic gain. Though shared African ethnic identities such as Yoruba or Mandinka may have been influential in this context, the concept of a unified black racial identity, or of individual freedoms and labor rights, were not yet meaningful.
The Miranda decision would protect you because you were not read your rights to remain silent during those 12 hours. The purpose of the decision protects this exact situation of continuous pressure in an interrogation from happening.
