The year 1896 is historically significant due to the Supreme Court case Plessy v. Ferguson, which upheld the 'separate but equal' doctrine. This ruling provided the legal foundation for the codification and expansion of Jim Crow laws, enforcing racial segregation across the United States.

The 'new racism' refers to a shift from biological racism to a more subtle, cultural form of exclusion. It often manifests as xenophobia, where prejudice is expressed through the defense of national identity, cultural homogeneity, and the protection of 'our' way of life against perceived threats from outsiders. This form of racism is frequently masked by nationalist rhetoric, making it harder to identify and challenge than overt, traditional forms of racial discrimination.

A minority group is defined by its lack of power, hereditary membership, and a sense of group identity. Exogamy, or marrying outside the group, is generally not a characteristic of minority groups, which often practice endogamy to preserve their cultural or social identity in the face of external pressure or exclusion.

Sheila Patterson's study of Brixton highlighted the racial tensions and social divisions that emerged in a post-war working-class community. She observed that African-Caribbean immigrants faced significant discrimination, including being relegated to substandard, overpriced housing. This created a competitive environment for jobs and resources, which fueled resentment and conflict between the established white population and the new migrant arrivals.

Race is a social construct that has historically been defined by a combination of physical characteristics, such as skin color, as well as geographic origins and perceived ethnic groupings. While these categories lack a biological basis, they are frequently used in sociological discourse to classify populations based on these observable or historical traits.

Apartheid was a political and social system in South Africa from 1948 to the early 1990s that enforced racial segregation and white minority rule. It systematically marginalized non-white populations through discriminatory laws, restricted movement, and unequal access to resources, representing a extreme form of institutionalized racism.

Sociologically, discrimination is viewed as a social problem because it creates inequality and disrupts social harmony. Anti-discrimination laws are institutional responses designed to address these systemic issues. While these laws may eventually lead to social change, the phenomenon of discrimination itself is categorized as a social problem that requires intervention to ensure equity and justice within the broader social framework.

The Holocaust is widely recognized by historians and sociologists as a definitive example of genocide, involving the systematic, state-sponsored persecution and murder of six million Jews and other minority groups by the Nazi regime during World War II.

Ethnicity refers to a shared cultural heritage that distinguishes a group of people from others. This identity is constructed through various markers, including common language, religious beliefs, ancestral traditions, and historical experiences, which collectively foster a sense of belonging among group members.

Demographic research on inter-ethnic marriage patterns often highlights varying rates of out-marriage. Studies in the UK, for instance, have historically shown that individuals of Bangladeshi heritage exhibit lower rates of marriage outside their own ethnic group compared to other minority groups, reflecting specific cultural and social integration patterns.