What caused racial tension during the 1900s?

Racial tension during the 1900s was fueled by a combination of systemic racism, segregationist policies, and economic competition. The Jim Crow laws in the South enforced racial segregation and disenfranchised African Americans, while the Great Migration saw many Black Americans move to northern cities, leading to competition for jobs and housing. Additionally, events like the Red Summer of 1919, marked by race riots, highlighted the violent backlash against Black communities asserting their rights. Overall, deep-seated prejudices and socio-economic disparities exacerbated racial conflict throughout the decade.