Final answer:
Obstacles that have led to social structures affecting racial equity include historical events like apartheid, long-term effects of racism in the education system, and wider societal issues such as housing segregation and employment inequities.
Step-by-step explanation:
Obstacles that have led to social structures affecting racial equity include historical events like apartheid in South Africa, which institutionalized and legally enforced racism. This created social inequality and led to condemnation.
Additionally, the long-term effects of racism, discrimination, and disadvantage have left a mark of inequality in the education system, with students from different socioeconomic backgrounds not receiving the same opportunities. Furthermore, wider issues such as inequitable education, housing segregation, and employment inequities can also contribute to racial disparities and limit economic mobility for minority populations and historically underrepresented groups.