How did Jim Crow laws demonstrate institutionalized bias in the United States?

From the perspective of neoinstitutionalism, Jim Crow laws serve as a primary example of institutionalized bias—practices and rules that systematically disadvantage specific groups while becoming embedded in the fabric of society.

These laws mandated "separate but equal" status for Black Americans, enforcing segregation in schools, transportation, and public facilities. Neoinstitutional theory explains their persistence through several mechanisms:

• Legitimacy and Conformity: As more states and localities adopted these laws, they gained social legitimacy. Organizations and institutions conformed to these practices to align with their environment, often prioritizing this conformity over efficiency or moral goals.1
• Institutionalized Scripts: Rather than relying solely on individual prejudice, these laws provided "taken-for-granted" scripts. Individuals often followed these rules out of habit, as they became the "natural" model for social interaction.1
• Path Dependence: By codifying white supremacy and denying equity, these institutions created long-term, accumulated disadvantages for Black Americans, limiting their access to services and benefits for generations.12

Ultimately, these laws demonstrate how institutions can shape behavior and perpetuate inequality by transforming discriminatory practices into accepted, rule-like structures.1